42040131 has 8 divisors (see below), whose sum is σ = 64061184. Its totient is φ = 24022920.

The previous prime is 42040121. The next prime is 42040151. The reversal of 42040131 is 13104024.

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

It is not a de Polignac number, because 42040131 - 2¹¹ = 42038083 is a prime.

It is a super-2 number, since 2×42040131² = 3534745228994322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42040131.

It is not an unprimeable number, because it can be changed into a prime (42040121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000935 + ... + 1000976.

It is an arithmetic number, because the mean of its divisors is an integer number (8007648).

Almost surely, 2^42040131 is an apocalyptic number.

42040131 is a deficient number, since it is larger than the sum of its proper divisors (22021053).

42040131 is a wasteful number, since it uses less digits than its factorization.

42040131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001921.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 42040131 is about 6483.8361330311. The cubic root of 42040131 is about 347.7133406944.

Adding to 42040131 its reverse (13104024), we get a palindrome (55144155).

The spelling of 42040131 in words is "forty-two million, forty thousand, one hundred thirty-one".