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102034021 = 130378307
BaseRepresentation
bin1100001010011…
…10101001100101
321002222212100211
412011032221211
5202110042041
614042535421
72346163165
oct605165145
9232885324
10102034021
1152660741
122a207571
13181a657b
14d7a05a5
158e57481
hex614ea65

102034021 has 4 divisors (see below), whose sum is σ = 102113632. Its totient is φ = 101954412.

The previous prime is 102034013. The next prime is 102034033. The reversal of 102034021 is 120430201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120430201 = 151797551.

It is a cyclic number.

It is not a de Polignac number, because 102034021 - 23 = 102034013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102033992 and 102034010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102034061) 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 3 ways as a sum of consecutive naturals, for example, 37851 + ... + 40456.

It is an arithmetic number, because the mean of its divisors is an integer number (25528408).

Almost surely, 2102034021 is an apocalyptic number.

It is an amenable number.

102034021 is a deficient number, since it is larger than the sum of its proper divisors (79611).

102034021 is an equidigital number, since it uses as much as digits as its factorization.

102034021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79610.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 102034021 is about 10101.1890884192. The cubic root of 102034021 is about 467.2848138898.

Adding to 102034021 its reverse (120430201), we get a palindrome (222464222).

The spelling of 102034021 in words is "one hundred two million, thirty-four thousand, twenty-one".

Divisors: 1 1303 78307 102034021