124226820 has 72 divisors (see below), whose sum is σ = 398997144. Its totient is φ = 31177728.

The previous prime is 124226819. The next prime is 124226831. The reversal of 124226820 is 28622421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 63011844 + 61214976 = 7938^2 + 7824^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17239 + ... + 23358.

It is an arithmetic number, because the mean of its divisors is an integer number (5541627).

Almost surely, 2^124226820 is an apocalyptic number.

124226820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124226820 is an abundant number, since it is smaller than the sum of its proper divisors (274770324).

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

124226820 is a wasteful number, since it uses less digits than its factorization.

124226820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40629 (or 40624 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 124226820 is about 11145.7085912023. The cubic root of 124226820 is about 498.9669604619.

The spelling of 124226820 in words is "one hundred twenty-four million, two hundred twenty-six thousand, eight hundred twenty".