42031987293 has 4 divisors (see below), whose sum is σ = 56042649728. Its totient is φ = 28021324860.

The previous prime is 42031987279. The next prime is 42031987303. The reversal of 42031987293 is 39278913024.

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 not a de Polignac number, because 42031987293 - 2⁸ = 42031987037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42031987253) 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, 7005331213 + ... + 7005331218.

It is an arithmetic number, because the mean of its divisors is an integer number (14010662432).

Almost surely, 2^42031987293 is an apocalyptic number.

It is an amenable number.

42031987293 is a deficient number, since it is larger than the sum of its proper divisors (14010662435).

42031987293 is a wasteful number, since it uses less digits than its factorization.

42031987293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14010662434.

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 42031987293 in words is "forty-two billion, thirty-one million, nine hundred eighty-seven thousand, two hundred ninety-three".