42143610731 has 2 divisors, whose sum is σ = 42143610732. Its totient is φ = 42143610730.

The previous prime is 42143610721. The next prime is 42143610737. The reversal of 42143610731 is 13701634124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42143610731 - 2²² = 42139416427 is a prime.

It is a super-2 number, since 2×42143610731² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42143610737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21071805365 + 21071805366.

It is an arithmetic number, because the mean of its divisors is an integer number (21071805366).

Almost surely, 2^42143610731 is an apocalyptic number.

42143610731 is a deficient number, since it is larger than the sum of its proper divisors (1).

42143610731 is an equidigital number, since it uses as much as digits as its factorization.

42143610731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 42143610731 in words is "forty-two billion, one hundred forty-three million, six hundred ten thousand, seven hundred thirty-one".