124020720 has 100 divisors (see below), whose sum is σ = 430764840. Its totient is φ = 33070464.

The previous prime is 124020709. The next prime is 124020727. The reversal of 124020720 is 27020421.

It is a super-2 number, since 2×124020720² = 30762277978636800, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 124020693 and 124020702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124020727) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3090 + ... + 16049.

Almost surely, 2^124020720 is an apocalyptic number.

124020720 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 124020720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215382420).

124020720 is an abundant number, since it is smaller than the sum of its proper divisors (306744120).

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

124020720 is a wasteful number, since it uses less digits than its factorization.

124020720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19164 (or 19149 counting only the distinct ones).

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

The square root of 124020720 is about 11136.4590422629. The cubic root of 124020720 is about 498.6908686752.

The spelling of 124020720 in words is "one hundred twenty-four million, twenty thousand, seven hundred twenty".