42340131 has 8 divisors (see below), whose sum is σ = 62726160. Its totient is φ = 28226736.

The previous prime is 42340127. The next prime is 42340139. The reversal of 42340131 is 13104324.

It is not a de Polignac number, because 42340131 - 2² = 42340127 is a prime.

It is a super-2 number, since 2×42340131² = 3585373386194322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42340139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 784050 + ... + 784103.

It is an arithmetic number, because the mean of its divisors is an integer number (7840770).

Almost surely, 2^42340131 is an apocalyptic number.

42340131 is a deficient number, since it is larger than the sum of its proper divisors (20386029).

42340131 is a wasteful number, since it uses less digits than its factorization.

42340131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568162 (or 1568156 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 42340131 is about 6506.9294601986. The cubic root of 42340131 is about 348.5384796683.

Adding to 42340131 its reverse (13104324), we get a palindrome (55444455).

The spelling of 42340131 in words is "forty-two million, three hundred forty thousand, one hundred thirty-one".