124945820 has 24 divisors (see below), whose sum is σ = 262600800. Its totient is φ = 49937472.

The previous prime is 124945817. The next prime is 124945823. The reversal of 124945820 is 28549421.

It is an interprime number because it is at equal distance from previous prime (124945817) and next prime (124945823).

It is a super-2 number, since 2×124945820² = 31222915870944800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124945823) 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, 39041 + ... + 42119.

It is an arithmetic number, because the mean of its divisors is an integer number (10941700).

Almost surely, 2^124945820 is an apocalyptic number.

124945820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124945820 is an abundant number, since it is smaller than the sum of its proper divisors (137654980).

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

124945820 is a wasteful number, since it uses less digits than its factorization.

124945820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5117 (or 5115 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 124945820 is about 11177.9166216250. The cubic root of 124945820 is about 499.9277495603.

The spelling of 124945820 in words is "one hundred twenty-four million, nine hundred forty-five thousand, eight hundred twenty".