124240640 has 72 divisors (see below), whose sum is σ = 307949040. Its totient is φ = 47968256.

The previous prime is 124240637. The next prime is 124240651. The reversal of 124240640 is 46042421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35447 + ... + 38793.

It is an arithmetic number, because the mean of its divisors is an integer number (4277070).

Almost surely, 2^124240640 is an apocalyptic number.

124240640 is a gapful number since it is divisible by the number (10) 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 124240640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153974520).

124240640 is an abundant number, since it is smaller than the sum of its proper divisors (183708400).

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

124240640 is an equidigital number, since it uses as much as digits as its factorization.

124240640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397 (or 3383 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 124240640 is about 11146.3285435160. The cubic root of 124240640 is about 498.9854628210.

The spelling of 124240640 in words is "one hundred twenty-four million, two hundred forty thousand, six hundred forty".