124992020 has 24 divisors (see below), whose sum is σ = 267438024. Its totient is φ = 49053056.

The previous prime is 124992017. The next prime is 124992029. The reversal of 124992020 is 20299421.

It can be written as a sum of positive squares in 4 ways, for example, as 20052484 + 104939536 = 4478^2 + 10244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124992029) 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, 57899 + ... + 60018.

It is an arithmetic number, because the mean of its divisors is an integer number (11143251).

Almost surely, 2^124992020 is an apocalyptic number.

124992020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124992020 is an abundant number, since it is smaller than the sum of its proper divisors (142446004).

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

124992020 is a wasteful number, since it uses less digits than its factorization.

124992020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117979 (or 117977 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 124992020 is about 11179.9830053538. The cubic root of 124992020 is about 499.9893597736.

The spelling of 124992020 in words is "one hundred twenty-four million, nine hundred ninety-two thousand, twenty".