124221864 has 96 divisors (see below), whose sum is σ = 343193760. Its totient is φ = 37244160.

The previous prime is 124221863. The next prime is 124221869. The reversal of 124221864 is 468122421.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (124221863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1160899 + ... + 1161005.

It is an arithmetic number, because the mean of its divisors is an integer number (3574935).

Almost surely, 2^124221864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 124221864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171596880).

124221864 is an abundant number, since it is smaller than the sum of its proper divisors (218971896).

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

124221864 is a wasteful number, since it uses less digits than its factorization.

124221864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 186 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 124221864 is about 11145.4862612629. The cubic root of 124221864 is about 498.9603249835.

The spelling of 124221864 in words is "one hundred twenty-four million, two hundred twenty-one thousand, eight hundred sixty-four".