124213220 has 24 divisors (see below), whose sum is σ = 276192504. Its totient is φ = 46762496.

The previous prime is 124213217. The next prime is 124213267. The reversal of 124213220 is 22312421.

It can be written as a sum of positive squares in 4 ways, for example, as 6360484 + 117852736 = 2522^2 + 10856^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182327 + ... + 183006.

It is an arithmetic number, because the mean of its divisors is an integer number (11508021).

Almost surely, 2^124213220 is an apocalyptic number.

124213220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124213220 is an abundant number, since it is smaller than the sum of its proper divisors (151979284).

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

124213220 is a wasteful number, since it uses less digits than its factorization.

124213220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365359 (or 365357 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 124213220 is about 11145.0984742173. The cubic root of 124213220 is about 498.9487513014.

Adding to 124213220 its reverse (22312421), we get a palindrome (146525641).

The spelling of 124213220 in words is "one hundred twenty-four million, two hundred thirteen thousand, two hundred twenty".