124231220 has 24 divisors (see below), whose sum is σ = 261287208. Its totient is φ = 49616000.

The previous prime is 124231207. The next prime is 124231243. The reversal of 124231220 is 22132421.

It can be written as a sum of positive squares in 4 ways, for example, as 71842576 + 52388644 = 8476^2 + 7238^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9590 + ... + 18450.

It is an arithmetic number, because the mean of its divisors is an integer number (10886967).

Almost surely, 2^124231220 is an apocalyptic number.

124231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124231220 is an abundant number, since it is smaller than the sum of its proper divisors (137055988).

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

124231220 is a wasteful number, since it uses less digits than its factorization.

124231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9571 (or 9569 counting only the distinct ones).

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

The square root of 124231220 is about 11145.9059748412. The cubic root of 124231220 is about 498.9728513763.

Adding to 124231220 its reverse (22132421), we get a palindrome (146363641).

The spelling of 124231220 in words is "one hundred twenty-four million, two hundred thirty-one thousand, two hundred twenty".