42506156 has 24 divisors (see below), whose sum is σ = 92741376. Its totient is φ = 16560720.

The previous prime is 42506119. The next prime is 42506183. The reversal of 42506156 is 65160524.

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, 68696 + ... + 69311.

It is an arithmetic number, because the mean of its divisors is an integer number (3864224).

Almost surely, 2^42506156 is an apocalyptic number.

It is an amenable number.

42506156 is an abundant number, since it is smaller than the sum of its proper divisors (50235220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42506156 is a wasteful number, since it uses less digits than its factorization.

42506156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138029 (or 138027 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 42506156 is about 6519.6745317539. The cubic root of 42506156 is about 348.9934509435.

The spelling of 42506156 in words is "forty-two million, five hundred six thousand, one hundred fifty-six".