123057907 has 4 divisors (see below), whose sum is σ = 140637616. Its totient is φ = 105478200.

The previous prime is 123057901. The next prime is 123057931. The reversal of 123057907 is 709750321.

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

It is a cyclic number.

It is not a de Polignac number, because 123057907 - 2³ = 123057899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123057901) 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, 8789844 + ... + 8789857.

It is an arithmetic number, because the mean of its divisors is an integer number (35159404).

Almost surely, 2^123057907 is an apocalyptic number.

123057907 is a deficient number, since it is larger than the sum of its proper divisors (17579709).

123057907 is an equidigital number, since it uses as much as digits as its factorization.

123057907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17579708.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 123057907 is about 11093.1468483925. The cubic root of 123057907 is about 497.3970151216.

The spelling of 123057907 in words is "one hundred twenty-three million, fifty-seven thousand, nine hundred seven".