45640242 has 24 divisors (see below), whose sum is σ = 104092560. Its totient is φ = 14412600.

The previous prime is 45640241. The next prime is 45640249. The reversal of 45640242 is 24204654.

It is not an unprimeable number, because it can be changed into a prime (45640241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66384 + ... + 67067.

It is an arithmetic number, because the mean of its divisors is an integer number (4337190).

Almost surely, 2^45640242 is an apocalyptic number.

45640242 is an abundant number, since it is smaller than the sum of its proper divisors (58452318).

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

45640242 is a wasteful number, since it uses less digits than its factorization.

45640242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133478 (or 133475 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 45640242 is about 6755.7562122978. The cubic root of 45640242 is about 357.3682615653.

Adding to 45640242 its reverse (24204654), we get a palindrome (69844896).

The spelling of 45640242 in words is "forty-five million, six hundred forty thousand, two hundred forty-two".