123000399 has 6 divisors (see below), whose sum is σ = 177667256. Its totient is φ = 82000260.

The previous prime is 123000391. The next prime is 123000419. The reversal of 123000399 is 993000321.

It is not a de Polignac number, because 123000399 - 2³ = 123000391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123000391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6833347 + ... + 6833364.

Almost surely, 2^123000399 is an apocalyptic number.

123000399 is a deficient number, since it is larger than the sum of its proper divisors (54666857).

123000399 is a wasteful number, since it uses less digits than its factorization.

123000399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13666717 (or 13666714 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 123000399 is about 11090.5544947040. The cubic root of 123000399 is about 497.3195210777.

The spelling of 123000399 in words is "one hundred twenty-three million, three hundred ninety-nine", and thus it is an aban number.