100340245 has 4 divisors (see below), whose sum is σ = 120408300. Its totient is φ = 80272192.

The previous prime is 100340153. The next prime is 100340249. The reversal of 100340245 is 542043001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21325924 + 79014321 = 4618^2 + 8889^2 .

It is a cyclic number.

It is not a de Polignac number, because 100340245 - 2¹⁹ = 99815957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100340249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10034020 + ... + 10034029.

It is an arithmetic number, because the mean of its divisors is an integer number (30102075).

Almost surely, 2^100340245 is an apocalyptic number.

It is an amenable number.

100340245 is a deficient number, since it is larger than the sum of its proper divisors (20068055).

100340245 is an equidigital number, since it uses as much as digits as its factorization.

100340245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20068054.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 100340245 is about 10016.9978037334. The cubic root of 100340245 is about 464.6847132390.

Adding to 100340245 its reverse (542043001), we get a palindrome (642383246).

The spelling of 100340245 in words is "one hundred million, three hundred forty thousand, two hundred forty-five".