126642789534931 has 2 divisors, whose sum is σ = 126642789534932. Its totient is φ = 126642789534930.

The previous prime is 126642789534901. The next prime is 126642789534953. The reversal of 126642789534931 is 139435987246621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126642789534931 - 2⁹ = 126642789534419 is a prime.

It is a super-2 number, since 2×126642789534931² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126642789534901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63321394767465 + 63321394767466.

It is an arithmetic number, because the mean of its divisors is an integer number (63321394767466).

Almost surely, 2^{126642789534931} is an apocalyptic number.

126642789534931 is a deficient number, since it is larger than the sum of its proper divisors (1).

126642789534931 is an equidigital number, since it uses as much as digits as its factorization.

126642789534931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470292480, while the sum is 70.

The spelling of 126642789534931 in words is "one hundred twenty-six trillion, six hundred forty-two billion, seven hundred eighty-nine million, five hundred thirty-four thousand, nine hundred thirty-one".