42402986837 has 2 divisors, whose sum is σ = 42402986838. Its totient is φ = 42402986836.

The previous prime is 42402986777. The next prime is 42402986863. The reversal of 42402986837 is 73868920424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28279803556 + 14123183281 = 168166^2 + 118841^2 .

It is a cyclic number.

It is not a de Polignac number, because 42402986837 - 2³⁴ = 25223117653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42402986137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201493418 + 21201493419.

It is an arithmetic number, because the mean of its divisors is an integer number (21201493419).

Almost surely, 2^42402986837 is an apocalyptic number.

It is an amenable number.

42402986837 is a deficient number, since it is larger than the sum of its proper divisors (1).

42402986837 is an equidigital number, since it uses as much as digits as its factorization.

42402986837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 42402986837 in words is "forty-two billion, four hundred two million, nine hundred eighty-six thousand, eight hundred thirty-seven".