123252915 has 16 divisors (see below), whose sum is σ = 197641728. Its totient is φ = 65589216.

The previous prime is 123252911. The next prime is 123252919. The reversal of 123252915 is 519252321.

It is an interprime number because it is at equal distance from previous prime (123252911) and next prime (123252919).

It is not a de Polignac number, because 123252915 - 2² = 123252911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123252911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1929 + ... + 15818.

It is an arithmetic number, because the mean of its divisors is an integer number (12352608).

Almost surely, 2^123252915 is an apocalyptic number.

123252915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123252915 is a deficient number, since it is larger than the sum of its proper divisors (74388813).

123252915 is a wasteful number, since it uses less digits than its factorization.

123252915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18218.

The product of its digits is 5400, while the sum is 30.

The square root of 123252915 is about 11101.9329398083. The cubic root of 123252915 is about 497.6596156276.

The spelling of 123252915 in words is "one hundred twenty-three million, two hundred fifty-two thousand, nine hundred fifteen".