126290631 has 16 divisors (see below), whose sum is σ = 175993344. Its totient is φ = 80402784.

The previous prime is 126290623. The next prime is 126290641. The reversal of 126290631 is 136092621.

It is not a de Polignac number, because 126290631 - 2³ = 126290623 is a prime.

It is a super-2 number, since 2×126290631² = 31898646956756322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126290641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59470 + ... + 61556.

It is an arithmetic number, because the mean of its divisors is an integer number (10999584).

Almost surely, 2^126290631 is an apocalyptic number.

126290631 is a deficient number, since it is larger than the sum of its proper divisors (49702713).

126290631 is a wasteful number, since it uses less digits than its factorization.

126290631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 126290631 is about 11237.9104374434. The cubic root of 126290631 is about 501.7149524842.

The spelling of 126290631 in words is "one hundred twenty-six million, two hundred ninety thousand, six hundred thirty-one".