712420137 has 32 divisors (see below), whose sum is σ = 1239960960. Its totient is φ = 398554560.

The previous prime is 712420133. The next prime is 712420153. The reversal of 712420137 is 731024217.

It is a happy number.

It is not a de Polignac number, because 712420137 - 2² = 712420133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 712420137.

It is not an unprimeable number, because it can be changed into a prime (712420133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88398 + ... + 96119.

It is an arithmetic number, because the mean of its divisors is an integer number (38748780).

Almost surely, 2^712420137 is an apocalyptic number.

It is an amenable number.

712420137 is a deficient number, since it is larger than the sum of its proper divisors (527540823).

712420137 is a wasteful number, since it uses less digits than its factorization.

712420137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184550 (or 184544 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 712420137 is about 26691.1996171023. The cubic root of 712420137 is about 893.1246217174.

It can be divided in two parts, 7124 and 20137, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 712420137 in words is "seven hundred twelve million, four hundred twenty thousand, one hundred thirty-seven".