124101220 has 24 divisors (see below), whose sum is σ = 260983800. Its totient is φ = 49569792.

The previous prime is 124101193. The next prime is 124101221. The reversal of 124101220 is 22101421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1290496 + 122810724 = 1136^2 + 11082^2 .

It is a super-2 number, since 2×124101220² = 30802225610976800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 124101220.

It is not an unprimeable number, because it can be changed into a prime (124101221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11346 + ... + 19414.

It is an arithmetic number, because the mean of its divisors is an integer number (10874325).

Almost surely, 2^124101220 is an apocalyptic number.

124101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124101220 is an abundant number, since it is smaller than the sum of its proper divisors (136882580).

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

124101220 is a wasteful number, since it uses less digits than its factorization.

124101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8847 (or 8845 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 124101220 is about 11140.0727107142. The cubic root of 124101220 is about 498.7987429409.

Adding to 124101220 its reverse (22101421), we get a palindrome (146202641).

The spelling of 124101220 in words is "one hundred twenty-four million, one hundred one thousand, two hundred twenty".