124221204 has 36 divisors (see below), whose sum is σ = 315162484. Its totient is φ = 41254272.

The previous prime is 124221199. The next prime is 124221211. The reversal of 124221204 is 402122421.

It can be written as a sum of positive squares in 2 ways, for example, as 61779600 + 62441604 = 7860^2 + 7902^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3744 + ... + 16200.

Almost surely, 2^124221204 is an apocalyptic number.

It is an amenable number.

124221204 is an abundant number, since it is smaller than the sum of its proper divisors (190941280).

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

124221204 is a wasteful number, since it uses less digits than its factorization.

124221204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12744 (or 12739 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 124221204 is about 11145.4566528250. The cubic root of 124221204 is about 498.9594413108.

Adding to 124221204 its reverse (402122421), we get a palindrome (526343625).

The spelling of 124221204 in words is "one hundred twenty-four million, two hundred twenty-one thousand, two hundred four".