126386931 has 16 divisors (see below), whose sum is σ = 188805888. Its totient is φ = 74527200.

The previous prime is 126386903. The next prime is 126386941. The reversal of 126386931 is 139683621.

It is not a de Polignac number, because 126386931 - 2⁵ = 126386899 is a prime.

It is a super-2 number, since 2×126386931² = 31947312655197522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126386931.

It is not an unprimeable number, because it can be changed into a prime (126386941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50535 + ... + 52976.

It is an arithmetic number, because the mean of its divisors is an integer number (11800368).

Almost surely, 2^126386931 is an apocalyptic number.

126386931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

126386931 is a deficient number, since it is larger than the sum of its proper divisors (62418957).

126386931 is a wasteful number, since it uses less digits than its factorization.

126386931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103562.

The product of its digits is 46656, while the sum is 39.

The square root of 126386931 is about 11242.1942253281. The cubic root of 126386931 is about 501.8424437959.

The spelling of 126386931 in words is "one hundred twenty-six million, three hundred eighty-six thousand, nine hundred thirty-one".