123090736 has 20 divisors (see below), whose sum is σ = 239493600. Its totient is φ = 61285952.

The previous prime is 123090731. The next prime is 123090763. The reversal of 123090736 is 637090321.

It is a junction number, because it is equal to n+sod(n) for n = 123090698 and 123090707.

It is not an unprimeable number, because it can be changed into a prime (123090731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12271 + ... + 19918.

It is an arithmetic number, because the mean of its divisors is an integer number (11974680).

Almost surely, 2^123090736 is an apocalyptic number.

123090736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123090736 is a deficient number, since it is larger than the sum of its proper divisors (116402864).

123090736 is a wasteful number, since it uses less digits than its factorization.

123090736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32436 (or 32430 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 123090736 is about 11094.6264470689. The cubic root of 123090736 is about 497.4412425241.

The spelling of 123090736 in words is "one hundred twenty-three million, ninety thousand, seven hundred thirty-six".