124740 has 120 divisors (see below), whose sum is σ = 487872. Its totient is φ = 25920.

The previous prime is 124739. The next prime is 124753. The reversal of 124740 is 47421.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11335 + ... + 11345.

2¹²⁴⁷⁴⁰ is an apocalyptic number.

124740 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 124740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243936).

124740 is an abundant number, since it is smaller than the sum of its proper divisors (363132).

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

124740 is a wasteful number, since it uses less digits than its factorization.

124740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 124740 is about 353.1855036663. The cubic root of 124740 is about 49.9653092700.

The spelling of 124740 in words is "one hundred twenty-four thousand, seven hundred forty", and thus it is an iban number.