42013218 has 32 divisors (see below), whose sum is σ = 95256000. Its totient is φ = 12246336.

The previous prime is 42013217. The next prime is 42013219. The reversal of 42013218 is 81231024.

It is an interprime number because it is at equal distance from previous prime (42013217) and next prime (42013219).

It is a super-2 number, since 2×42013218² = 3530220973431048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42013194 and 42013203.

It is not an unprimeable number, because it can be changed into a prime (42013211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12693 + ... + 15656.

It is an arithmetic number, because the mean of its divisors is an integer number (2976750).

Almost surely, 2^42013218 is an apocalyptic number.

42013218 is an abundant number, since it is smaller than the sum of its proper divisors (53242782).

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

42013218 is a wasteful number, since it uses less digits than its factorization.

42013218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28386.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 42013218 is about 6481.7604090247. The cubic root of 42013218 is about 347.6391258387.

The spelling of 42013218 in words is "forty-two million, thirteen thousand, two hundred eighteen".