127540431 has 12 divisors (see below), whose sum is σ = 184328040. Its totient is φ = 84979440.

The previous prime is 127540429. The next prime is 127540487. The reversal of 127540431 is 134045721.

It is not a de Polignac number, because 127540431 - 2¹ = 127540429 is a prime.

It is a super-2 number, since 2×127540431² = 32533123079331522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127540395 and 127540404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127540031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21985 + ... + 27173.

It is an arithmetic number, because the mean of its divisors is an integer number (15360670).

Almost surely, 2^127540431 is an apocalyptic number.

127540431 is a deficient number, since it is larger than the sum of its proper divisors (56787609).

127540431 is a wasteful number, since it uses less digits than its factorization.

127540431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7926 (or 7923 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 127540431 is about 11293.3799635007. The cubic root of 127540431 is about 503.3645501547.

The spelling of 127540431 in words is "one hundred twenty-seven million, five hundred forty thousand, four hundred thirty-one".