42040531241 has 4 divisors (see below), whose sum is σ = 44253190800. Its totient is φ = 39827871684.

The previous prime is 42040531229. The next prime is 42040531319. The reversal of 42040531241 is 14213504024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42040531241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42040531241.

It is not an unprimeable number, because it can be changed into a prime (42040530241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106329751 + ... + 1106329788.

It is an arithmetic number, because the mean of its divisors is an integer number (11063297700).

Almost surely, 2^42040531241 is an apocalyptic number.

It is an amenable number.

42040531241 is a deficient number, since it is larger than the sum of its proper divisors (2212659559).

42040531241 is a wasteful number, since it uses less digits than its factorization.

42040531241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212659558.

The product of its (nonzero) digits is 3840, while the sum is 26.

The spelling of 42040531241 in words is "forty-two billion, forty million, five hundred thirty-one thousand, two hundred forty-one".