124402140 has 72 divisors (see below), whose sum is σ = 387572640. Its totient is φ = 32275584.

The previous prime is 124402127. The next prime is 124402171. The reversal of 124402140 is 41204421.

124402140 is a `hidden beast` number, since 12 + 440 + 214 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2680 + ... + 15999.

Almost surely, 2^124402140 is an apocalyptic number.

124402140 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 124402140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193786320).

124402140 is an abundant number, since it is smaller than the sum of its proper divisors (263170500).

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

124402140 is a wasteful number, since it uses less digits than its factorization.

124402140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18731 (or 18726 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 124402140 is about 11153.5707286949. The cubic root of 124402140 is about 499.2015790600.

Adding to 124402140 its reverse (41204421), we get a palindrome (165606561).

The spelling of 124402140 in words is "one hundred twenty-four million, four hundred two thousand, one hundred forty".