12137990 has 16 divisors (see below), whose sum is σ = 21973680. Its totient is φ = 4827360.

The previous prime is 12137989. The next prime is 12138001. The reversal of 12137990 is 9973121.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1601 + ... + 5180.

It is an arithmetic number, because the mean of its divisors is an integer number (1373355).

Almost surely, 2^12137990 is an apocalyptic number.

12137990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12137990 is a deficient number, since it is larger than the sum of its proper divisors (9835690).

12137990 is a wasteful number, since it uses less digits than its factorization.

12137990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6967.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 12137990 is about 3483.9618252788. The cubic root of 12137990 is about 229.8170567930.

The spelling of 12137990 in words is "twelve million, one hundred thirty-seven thousand, nine hundred ninety".