42118056 has 40 divisors (see below), whose sum is σ = 117971370. Its totient is φ = 14039136.

The previous prime is 42118049. The next prime is 42118067. The reversal of 42118056 is 65081124.

It can be written as a sum of positive squares in only one way, i.e., 40832100 + 1285956 = 6390^2 + 1134^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31851 + ... + 33146.

Almost surely, 2^42118056 is an apocalyptic number.

It is an amenable number.

42118056 is an abundant number, since it is smaller than the sum of its proper divisors (75853314).

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

42118056 is a wasteful number, since it uses less digits than its factorization.

42118056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65015 (or 65002 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 42118056 is about 6489.8425250541. The cubic root of 42118056 is about 347.9280469551.

The spelling of 42118056 in words is "forty-two million, one hundred eighteen thousand, fifty-six".