126792421281 has 8 divisors (see below), whose sum is σ = 187840624160. Its totient is φ = 84528280836.

The previous prime is 126792421247. The next prime is 126792421313. The reversal of 126792421281 is 182124297621.

126792421281 is a `hidden beast` number, since 1 + 2 + 67 + 92 + 421 + 2 + 81 = 666.

It is not a de Polignac number, because 126792421281 - 2¹⁰ = 126792420257 is a prime.

It is a super-2 number, since 2×126792421281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126792421201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2348007775 + ... + 2348007828.

It is an arithmetic number, because the mean of its divisors is an integer number (23480078020).

Almost surely, 2^126792421281 is an apocalyptic number.

It is an amenable number.

126792421281 is a deficient number, since it is larger than the sum of its proper divisors (61048202879).

126792421281 is an equidigital number, since it uses as much as digits as its factorization.

126792421281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696015612 (or 4696015606 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The spelling of 126792421281 in words is "one hundred twenty-six billion, seven hundred ninety-two million, four hundred twenty-one thousand, two hundred eighty-one".