124122440 has 128 divisors (see below), whose sum is σ = 335664000. Its totient is φ = 40808448.

The previous prime is 124122431. The next prime is 124122451. The reversal of 124122440 is 44221421.

It is a super-2 number, since 2×124122440² = 30812760223107200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167591 + ... + 168329.

It is an arithmetic number, because the mean of its divisors is an integer number (2622375).

Almost surely, 2^124122440 is an apocalyptic number.

124122440 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 124122440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167832000).

124122440 is an abundant number, since it is smaller than the sum of its proper divisors (211541560).

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

124122440 is a wasteful number, since it uses less digits than its factorization.

124122440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 124122440 is about 11141.0250874863. The cubic root of 124122440 is about 498.8271710957.

Adding to 124122440 its reverse (44221421), we get a palindrome (168343861).

The spelling of 124122440 in words is "one hundred twenty-four million, one hundred twenty-two thousand, four hundred forty".