123604913 has 2 divisors, whose sum is σ = 123604914. Its totient is φ = 123604912.

The previous prime is 123604907. The next prime is 123604963. The reversal of 123604913 is 319406321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86248369 + 37356544 = 9287^2 + 6112^2 .

It is a cyclic number.

It is not a de Polignac number, because 123604913 - 2¹² = 123600817 is a prime.

It is not a weakly prime, because it can be changed into another prime (123604963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61802456 + 61802457.

It is an arithmetic number, because the mean of its divisors is an integer number (61802457).

Almost surely, 2^123604913 is an apocalyptic number.

It is an amenable number.

123604913 is a deficient number, since it is larger than the sum of its proper divisors (1).

123604913 is an equidigital number, since it uses as much as digits as its factorization.

123604913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 123604913 is about 11117.7746424363. The cubic root of 123604913 is about 498.1329207080.

The spelling of 123604913 in words is "one hundred twenty-three million, six hundred four thousand, nine hundred thirteen".