124665920 has 56 divisors (see below), whose sum is σ = 298362624. Its totient is φ = 49614336.

The previous prime is 124665899. The next prime is 124665923. The reversal of 124665920 is 29566421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (124665923) 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, 70487 + ... + 72233.

It is an arithmetic number, because the mean of its divisors is an integer number (5327904).

Almost surely, 2^124665920 is an apocalyptic number.

124665920 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 124665920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149181312).

124665920 is an abundant number, since it is smaller than the sum of its proper divisors (173696704).

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

124665920 is a wasteful number, since it uses less digits than its factorization.

124665920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987 (or 1977 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 124665920 is about 11165.3893796858. The cubic root of 124665920 is about 499.5541625761.

The spelling of 124665920 in words is "one hundred twenty-four million, six hundred sixty-five thousand, nine hundred twenty".