42225156 has 18 divisors (see below), whose sum is σ = 106735902. Its totient is φ = 14075040.

The previous prime is 42225143. The next prime is 42225173. The reversal of 42225156 is 65152224.

It can be written as a sum of positive squares in only one way, i.e., 34574400 + 7650756 = 5880^2 + 2766^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 586425 + ... + 586496.

Almost surely, 2^42225156 is an apocalyptic number.

It is an amenable number.

42225156 is an abundant number, since it is smaller than the sum of its proper divisors (64510746).

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

42225156 is a wasteful number, since it uses less digits than its factorization.

42225156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172931 (or 1172926 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 42225156 is about 6498.0886420547. The cubic root of 42225156 is about 348.2227072272. Note that the first 3 decimals are identical.

The spelling of 42225156 in words is "forty-two million, two hundred twenty-five thousand, one hundred fifty-six".