123357859 has 2 divisors, whose sum is σ = 123357860. Its totient is φ = 123357858.

The previous prime is 123357833. The next prime is 123357863. The reversal of 123357859 is 958753321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123357859 - 2⁹ = 123357347 is a prime.

It is a super-2 number, since 2×123357859² = 30434322754127762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123357359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61678929 + 61678930.

It is an arithmetic number, because the mean of its divisors is an integer number (61678930).

Almost surely, 2^123357859 is an apocalyptic number.

123357859 is a deficient number, since it is larger than the sum of its proper divisors (1).

123357859 is an equidigital number, since it uses as much as digits as its factorization.

123357859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 43.

The square root of 123357859 is about 11106.6583183242. The cubic root of 123357859 is about 497.8008200633.

The spelling of 123357859 in words is "one hundred twenty-three million, three hundred fifty-seven thousand, eight hundred fifty-nine".