126938131 has 4 divisors (see below), whose sum is σ = 128726064. Its totient is φ = 125150200.

The previous prime is 126938101. The next prime is 126938143. The reversal of 126938131 is 131839621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126938131 - 2⁹ = 126937619 is a prime.

It is a super-2 number, since 2×126938131² = 32226578203546322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126938101) 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 3 ways as a sum of consecutive naturals, for example, 893860 + ... + 894001.

It is an arithmetic number, because the mean of its divisors is an integer number (32181516).

Almost surely, 2^126938131 is an apocalyptic number.

126938131 is a deficient number, since it is larger than the sum of its proper divisors (1787933).

126938131 is an equidigital number, since it uses as much as digits as its factorization.

126938131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787932.

The product of its digits is 7776, while the sum is 34.

The square root of 126938131 is about 11266.6823421982. The cubic root of 126938131 is about 502.5709326202.

The spelling of 126938131 in words is "one hundred twenty-six million, nine hundred thirty-eight thousand, one hundred thirty-one".