126131554 has 8 divisors (see below), whose sum is σ = 189323820. Its totient is φ = 63023616.

The previous prime is 126131501. The next prime is 126131567. The reversal of 126131554 is 455131621.

It can be written as a sum of positive squares in 2 ways, for example, as 108264025 + 17867529 = 10405^2 + 4227^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17199 + ... + 23410.

Almost surely, 2^126131554 is an apocalyptic number.

126131554 is a deficient number, since it is larger than the sum of its proper divisors (63192266).

126131554 is a wasteful number, since it uses less digits than its factorization.

126131554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42164.

The product of its digits is 3600, while the sum is 28.

The square root of 126131554 is about 11230.8305124777. The cubic root of 126131554 is about 501.5042088402.

The spelling of 126131554 in words is "one hundred twenty-six million, one hundred thirty-one thousand, five hundred fifty-four".