42569138 has 16 divisors (see below), whose sum is σ = 66073344. Its totient is φ = 20548080.

The previous prime is 42569099. The next prime is 42569141. The reversal of 42569138 is 83196524.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46481 + ... + 47387.

It is an arithmetic number, because the mean of its divisors is an integer number (4129584).

Almost surely, 2^42569138 is an apocalyptic number.

42569138 is a deficient number, since it is larger than the sum of its proper divisors (23504206).

42569138 is a wasteful number, since it uses less digits than its factorization.

42569138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697.

The product of its digits is 51840, while the sum is 38.

The square root of 42569138 is about 6524.5028929413. The cubic root of 42569138 is about 349.1657354652.

The spelling of 42569138 in words is "forty-two million, five hundred sixty-nine thousand, one hundred thirty-eight".