124140 has 24 divisors (see below), whose sum is σ = 347760. Its totient is φ = 33088.

The previous prime is 124139. The next prime is 124147. The reversal of 124140 is 41421.

124140 = 35² + 36² + ... + 74².

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (124147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 975 + ... + 1094.

It is an arithmetic number, because the mean of its divisors is an integer number (14490).

2¹²⁴¹⁴⁰ is an apocalyptic number.

124140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124140 is an abundant number, since it is smaller than the sum of its proper divisors (223620).

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

124140 is a wasteful number, since it uses less digits than its factorization.

124140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081 (or 2079 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 124140 is about 352.3350677977. The cubic root of 124140 is about 49.8850693547.

Adding to 124140 its reverse (41421), we get a palindrome (165561).

The spelling of 124140 in words is "one hundred twenty-four thousand, one hundred forty", and thus it is an iban number.