123240969 has 24 divisors (see below), whose sum is σ = 190786752. Its totient is φ = 76459680.

The previous prime is 123240961. The next prime is 123240979. The reversal of 123240969 is 969042321.

It is not a de Polignac number, because 123240969 - 2³ = 123240961 is a prime.

It is a super-2 number, since 2×123240969² = 30376672880117922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123240961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 387 + ... + 15704.

It is an arithmetic number, because the mean of its divisors is an integer number (7949448).

Almost surely, 2^123240969 is an apocalyptic number.

It is an amenable number.

123240969 is a deficient number, since it is larger than the sum of its proper divisors (67545783).

123240969 is a wasteful number, since it uses less digits than its factorization.

123240969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16157 (or 16154 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 123240969 is about 11101.3949123522. The cubic root of 123240969 is about 497.6435369441.

The spelling of 123240969 in words is "one hundred twenty-three million, two hundred forty thousand, nine hundred sixty-nine".