123258428 has 6 divisors (see below), whose sum is σ = 215702256. Its totient is φ = 61629212.

The previous prime is 123258419. The next prime is 123258437. The reversal of 123258428 is 824852321.

It is an interprime number because it is at equal distance from previous prime (123258419) and next prime (123258437).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15407300 + ... + 15407307.

It is an arithmetic number, because the mean of its divisors is an integer number (35950376).

Almost surely, 2^123258428 is an apocalyptic number.

It is an amenable number.

123258428 is a deficient number, since it is larger than the sum of its proper divisors (92443828).

123258428 is a wasteful number, since it uses less digits than its factorization.

123258428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30814611 (or 30814609 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 123258428 is about 11102.1812271283. The cubic root of 123258428 is about 497.6670354834.

The spelling of 123258428 in words is "one hundred twenty-three million, two hundred fifty-eight thousand, four hundred twenty-eight".