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8103420361 = 900192
BaseRepresentation
bin1111000110000000…
…00110000111001001
3202220202000101222001
413203000012013021
5113043433422421
63420032231001
7404544636151
oct74300060711
922822011861
108103420361
113489195723
1216a199b461
139c1ab36ba
1456c309761
15326628691
hex1e30061c9

8103420361 has 3 divisors (see below), whose sum is σ = 8103510381. Its totient is φ = 8103330342.

The previous prime is 8103420341. The next prime is 8103420383. The reversal of 8103420361 is 1630243018.

The square root of 8103420361 is 90019.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1630243018 = 2815121509.

It is not a de Polignac number, because 8103420361 - 211 = 8103418313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8103420331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 45010 + ... + 135028.

It is an arithmetic number, because the mean of its divisors is an integer number (2701170127).

Almost surely, 28103420361 is an apocalyptic number.

8103420361 is the 90019-th square number.

8103420361 is the 45010-th centered octagonal number.

It is an amenable number.

8103420361 is a deficient number, since it is larger than the sum of its proper divisors (90020).

8103420361 is an frugal number, since it uses more digits than its factorization.

8103420361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180038 (or 90019 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The cubic root of 8103420361 is about 2008.5814897702.

Adding to 8103420361 its reverse (1630243018), we get a palindrome (9733663379).

The spelling of 8103420361 in words is "eight billion, one hundred three million, four hundred twenty thousand, three hundred sixty-one".

Divisors: 1 90019 8103420361