42538136 has 8 divisors (see below), whose sum is σ = 79759020. Its totient is φ = 21269064.

The previous prime is 42538127. The next prime is 42538151. The reversal of 42538136 is 63183524.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2658626 + ... + 2658641.

Almost surely, 2^42538136 is an apocalyptic number.

It is an amenable number.

42538136 is a deficient number, since it is larger than the sum of its proper divisors (37220884).

42538136 is a wasteful number, since it uses less digits than its factorization.

42538136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5317273 (or 5317269 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 42538136 is about 6522.1266470378. The cubic root of 42538136 is about 349.0809520946.

The spelling of 42538136 in words is "forty-two million, five hundred thirty-eight thousand, one hundred thirty-six".