42054015139 has 2 divisors, whose sum is σ = 42054015140. Its totient is φ = 42054015138.

The previous prime is 42054015121. The next prime is 42054015169. The reversal of 42054015139 is 93151045024.

42054015139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42054015139 - 2³⁵ = 7694276771 is a prime.

It is a super-2 number, since 2×42054015139² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42054015109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21027007569 + 21027007570.

It is an arithmetic number, because the mean of its divisors is an integer number (21027007570).

Almost surely, 2^42054015139 is an apocalyptic number.

42054015139 is a deficient number, since it is larger than the sum of its proper divisors (1).

42054015139 is an equidigital number, since it uses as much as digits as its factorization.

42054015139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 42054015139 in words is "forty-two billion, fifty-four million, fifteen thousand, one hundred thirty-nine".