126740233931 has 2 divisors, whose sum is σ = 126740233932. Its totient is φ = 126740233930.

The previous prime is 126740233891. The next prime is 126740234003. The reversal of 126740233931 is 139332047621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126740233931 - 2²⁶ = 126673125067 is a prime.

It is a super-2 number, since 2×126740233931² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126740235931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63370116965 + 63370116966.

It is an arithmetic number, because the mean of its divisors is an integer number (63370116966).

Almost surely, 2^126740233931 is an apocalyptic number.

126740233931 is a deficient number, since it is larger than the sum of its proper divisors (1).

126740233931 is an equidigital number, since it uses as much as digits as its factorization.

126740233931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 41.

The spelling of 126740233931 in words is "one hundred twenty-six billion, seven hundred forty million, two hundred thirty-three thousand, nine hundred thirty-one".