45124240 has 80 divisors (see below), whose sum is σ = 126241920. Its totient is φ = 14653440.

The previous prime is 45124223. The next prime is 45124279. The reversal of 45124240 is 4242154.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8520 + ... + 12760.

It is an arithmetic number, because the mean of its divisors is an integer number (1578024).

Almost surely, 2^45124240 is an apocalyptic number.

45124240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45124240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63120960).

45124240 is an abundant number, since it is smaller than the sum of its proper divisors (81117680).

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

45124240 is a wasteful number, since it uses less digits than its factorization.

45124240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280 (or 4274 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 45124240 is about 6717.4578524915. The cubic root of 45124240 is about 356.0163692343.

Adding to 45124240 its reverse (4242154), we get a palindrome (49366394).

The spelling of 45124240 in words is "forty-five million, one hundred twenty-four thousand, two hundred forty".