126925715440 has 20 divisors (see below), whose sum is σ = 295102288584. Its totient is φ = 50770286144.

The previous prime is 126925715387. The next prime is 126925715459. The reversal of 126925715440 is 44517529621.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×126925715440² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793285642 + ... + 793285801.

Almost surely, 2^126925715440 is an apocalyptic number.

126925715440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126925715440 is an abundant number, since it is smaller than the sum of its proper divisors (168176573144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126925715440 is a wasteful number, since it uses less digits than its factorization.

126925715440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586571456 (or 1586571450 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 126925715440 in words is "one hundred twenty-six billion, nine hundred twenty-five million, seven hundred fifteen thousand, four hundred forty".