45042318 has 40 divisors (see below), whose sum is σ = 104195520. Its totient is φ = 14528160.

The previous prime is 45042269. The next prime is 45042323. The reversal of 45042318 is 81324054.

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

It is a junction number, because it is equal to n+sod(n) for n = 45042291 and 45042300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 538 + ... + 9506.

It is an arithmetic number, because the mean of its divisors is an integer number (2604888).

Almost surely, 2^45042318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45042318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52097760).

45042318 is an abundant number, since it is smaller than the sum of its proper divisors (59153202).

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

45042318 is a wasteful number, since it uses less digits than its factorization.

45042318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9014 (or 9005 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 45042318 is about 6711.3573887851. The cubic root of 45042318 is about 355.8007922655.

The spelling of 45042318 in words is "forty-five million, forty-two thousand, three hundred eighteen".