42254989218 has 54 divisors (see below), whose sum is σ = 99163312209. Its totient is φ = 12998046672.

The previous prime is 42254989169. The next prime is 42254989241. The reversal of 42254989218 is 81298945224.

42254989218 is a `hidden beast` number, since 4 + 2 + 2 + 549 + 8 + 92 + 1 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 36129265929 + 6125723289 = 190077^2 + 78267^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=145353.

It is a super-2 number, since 2×42254989218² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11335671 + ... + 11339397.

Almost surely, 2^42254989218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42254989218

42254989218 is an abundant number, since it is smaller than the sum of its proper divisors (56908322991).

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

42254989218 is an equidigital number, since it uses as much as digits as its factorization.

42254989218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7488 (or 3745 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 42254989218 in words is "forty-two billion, two hundred fifty-four million, nine hundred eighty-nine thousand, two hundred eighteen".