42896139 has 16 divisors (see below), whose sum is σ = 67194624. Its totient is φ = 23997600.

The previous prime is 42896107. The next prime is 42896149. The reversal of 42896139 is 93169824.

It is not a de Polignac number, because 42896139 - 2⁵ = 42896107 is a prime.

It is a super-2 number, since 2×42896139² = 3680157482214642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42896139.

It is not an unprimeable number, because it can be changed into a prime (42896149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49567 + ... + 50424.

It is an arithmetic number, because the mean of its divisors is an integer number (4199664).

Almost surely, 2^42896139 is an apocalyptic number.

42896139 is a deficient number, since it is larger than the sum of its proper divisors (24298485).

42896139 is a wasteful number, since it uses less digits than its factorization.

42896139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100018.

The product of its digits is 93312, while the sum is 42.

The square root of 42896139 is about 6549.5144094811. The cubic root of 42896139 is about 350.0575116377.

The spelling of 42896139 in words is "forty-two million, eight hundred ninety-six thousand, one hundred thirty-nine".