124445220 has 48 divisors (see below), whose sum is σ = 352658880. Its totient is φ = 32784256.

The previous prime is 124445207. The next prime is 124445257. The reversal of 124445220 is 22544421.

It is a happy number.

It is a super-2 number, since 2×124445220² = 30973225561696800, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 7515 + ... + 17474.

It is an arithmetic number, because the mean of its divisors is an integer number (7347060).

Almost surely, 2^124445220 is an apocalyptic number.

124445220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124445220 is an abundant number, since it is smaller than the sum of its proper divisors (228213660).

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

124445220 is a wasteful number, since it uses less digits than its factorization.

124445220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25084 (or 25082 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 124445220 is about 11155.5017816322. The cubic root of 124445220 is about 499.2591962951.

Adding to 124445220 its reverse (22544421), we get a palindrome (146989641).

It can be divided in two parts, 1244 and 45220, that added together give a palindrome (46464).

The spelling of 124445220 in words is "one hundred twenty-four million, four hundred forty-five thousand, two hundred twenty".