45124140 has 48 divisors (see below), whose sum is σ = 128429280. Its totient is φ = 11834880.

The previous prime is 45124139. The next prime is 45124141. The reversal of 45124140 is 4142154.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45124139) and next prime (45124141).

It is not an unprimeable number, because it can be changed into a prime (45124141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2505 + ... + 9824.

It is an arithmetic number, because the mean of its divisors is an integer number (2675610).

Almost surely, 2^45124140 is an apocalyptic number.

It is an amenable number.

45124140 is an abundant number, since it is smaller than the sum of its proper divisors (83305140).

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

45124140 is a wasteful number, since it uses less digits than its factorization.

45124140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12402 (or 12400 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 45124140 is about 6717.4504091954. The cubic root of 45124140 is about 356.0161062443.

Adding to 45124140 its reverse (4142154), we get a palindrome (49266294).

The spelling of 45124140 in words is "forty-five million, one hundred twenty-four thousand, one hundred forty".