123913290 has 32 divisors (see below), whose sum is σ = 297720000. Its totient is φ = 33007104.

The previous prime is 123913267. The next prime is 123913301. The reversal of 123913290 is 92319321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35817 + ... + 39123.

It is an arithmetic number, because the mean of its divisors is an integer number (9303750).

Almost surely, 2^123913290 is an apocalyptic number.

123913290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123913290 is an abundant number, since it is smaller than the sum of its proper divisors (173806710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123913290 is a wasteful number, since it uses less digits than its factorization.

123913290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 123913290 is about 11131.6346508498. The cubic root of 123913290 is about 498.5468340422.

The spelling of 123913290 in words is "one hundred twenty-three million, nine hundred thirteen thousand, two hundred ninety".