40042104131 has 4 divisors (see below), whose sum is σ = 40095423264. Its totient is φ = 39988785000.

The previous prime is 40042104121. The next prime is 40042104163. The reversal of 40042104131 is 13140124004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40042104131 - 2³⁴ = 22862234947 is a prime.

It is a super-2 number, since 2×40042104131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40042104101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26658440 + ... + 26659941.

It is an arithmetic number, because the mean of its divisors is an integer number (10023855816).

Almost surely, 2^40042104131 is an apocalyptic number.

40042104131 is a deficient number, since it is larger than the sum of its proper divisors (53319133).

40042104131 is an equidigital number, since it uses as much as digits as its factorization.

40042104131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53319132.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 40042104131 its reverse (13140124004), we get a palindrome (53182228135).

The spelling of 40042104131 in words is "forty billion, forty-two million, one hundred four thousand, one hundred thirty-one".