124312140 has 72 divisors (see below), whose sum is σ = 385873488. Its totient is φ = 32376960.

The previous prime is 124312103. The next prime is 124312141. The reversal of 124312140 is 41213421.

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

It is not an unprimeable number, because it can be changed into a prime (124312141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 291 + ... + 15770.

It is an arithmetic number, because the mean of its divisors is an integer number (5359354).

Almost surely, 2^124312140 is an apocalyptic number.

124312140 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 124312140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192936744).

124312140 is an abundant number, since it is smaller than the sum of its proper divisors (261561348).

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

124312140 is a wasteful number, since it uses less digits than its factorization.

124312140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16119 (or 16114 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 124312140 is about 11149.5354163301. The cubic root of 124312140 is about 499.0811658553.

Adding to 124312140 its reverse (41213421), we get a palindrome (165525561).

The spelling of 124312140 in words is "one hundred twenty-four million, three hundred twelve thousand, one hundred forty".