42131086 has 16 divisors (see below), whose sum is σ = 65253600. Its totient is φ = 20386080.

The previous prime is 42131081. The next prime is 42131093. The reversal of 42131086 is 68013124.

42131086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42131086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42131081) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13296 + ... + 16156.

It is an arithmetic number, because the mean of its divisors is an integer number (4078350).

Almost surely, 2^42131086 is an apocalyptic number.

42131086 is a deficient number, since it is larger than the sum of its proper divisors (23122514).

42131086 is a wasteful number, since it uses less digits than its factorization.

42131086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 42131086 is about 6490.8463238626. The cubic root of 42131086 is about 347.9639225822.

The spelling of 42131086 in words is "forty-two million, one hundred thirty-one thousand, eighty-six".