42116139 has 32 divisors (see below), whose sum is σ = 67941440. Its totient is φ = 25629696.

The previous prime is 42116119. The next prime is 42116153. The reversal of 42116139 is 93161124.

42116139 is a `hidden beast` number, since 42 + 1 + 1 + 613 + 9 = 666.

It is not a de Polignac number, because 42116139 - 2⁸ = 42115883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42116119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33429 + ... + 34665.

It is an arithmetic number, because the mean of its divisors is an integer number (2123170).

Almost surely, 2^42116139 is an apocalyptic number.

42116139 is a deficient number, since it is larger than the sum of its proper divisors (25825301).

42116139 is a wasteful number, since it uses less digits than its factorization.

42116139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356 (or 1350 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 42116139 is about 6489.6948310379. The cubic root of 42116139 is about 347.9227682357.

The spelling of 42116139 in words is "forty-two million, one hundred sixteen thousand, one hundred thirty-nine".