42155522 has 16 divisors (see below), whose sum is σ = 64851840. Its totient is φ = 20542128.

The previous prime is 42155513. The next prime is 42155551. The reversal of 42155522 is 22555124.

It is a junction number, because it is equal to n+sod(n) for n = 42155491 and 42155500.

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, 25229 + ... + 26847.

It is an arithmetic number, because the mean of its divisors is an integer number (4053240).

Almost surely, 2^42155522 is an apocalyptic number.

42155522 is a deficient number, since it is larger than the sum of its proper divisors (22696318).

42155522 is a wasteful number, since it uses less digits than its factorization.

42155522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945.

The product of its digits is 4000, while the sum is 26.

The square root of 42155522 is about 6492.7283941345. The cubic root of 42155522 is about 348.0311825231.

The spelling of 42155522 in words is "forty-two million, one hundred fifty-five thousand, five hundred twenty-two".