42855118 has 16 divisors (see below), whose sum is σ = 67248000. Its totient is φ = 20443896.

The previous prime is 42855091. The next prime is 42855119. The reversal of 42855118 is 81155824.

It is a super-2 number, since 2×42855118² = 3673122277587848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42855119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22021 + ... + 23887.

It is an arithmetic number, because the mean of its divisors is an integer number (4203000).

Almost surely, 2^42855118 is an apocalyptic number.

42855118 is a deficient number, since it is larger than the sum of its proper divisors (24392882).

42855118 is a wasteful number, since it uses less digits than its factorization.

42855118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391.

The product of its digits is 12800, while the sum is 34.

The square root of 42855118 is about 6546.3820542342. The cubic root of 42855118 is about 349.9458909550.

The spelling of 42855118 in words is "forty-two million, eight hundred fifty-five thousand, one hundred eighteen".