42131418 has 32 divisors (see below), whose sum is σ = 99409920. Its totient is φ = 11648880.

The previous prime is 42131413. The next prime is 42131431. The reversal of 42131418 is 81413124.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42131413) 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, 14878 + ... + 17481.

It is an arithmetic number, because the mean of its divisors is an integer number (3106560).

Almost surely, 2^42131418 is an apocalyptic number.

42131418 is an abundant number, since it is smaller than the sum of its proper divisors (57278502).

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

42131418 is a wasteful number, since it uses less digits than its factorization.

42131418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32402.

The product of its digits is 768, while the sum is 24.

The square root of 42131418 is about 6490.8718982892. The cubic root of 42131418 is about 347.9648365845.

The spelling of 42131418 in words is "forty-two million, one hundred thirty-one thousand, four hundred eighteen".