124221205 has 16 divisors (see below), whose sum is σ = 150709104. Its totient is φ = 98288640.

The previous prime is 124221199. The next prime is 124221211. The reversal of 124221205 is 502122421.

It is an interprime number because it is at equal distance from previous prime (124221199) and next prime (124221211).

It can be written as a sum of positive squares in 8 ways, for example, as 76983076 + 47238129 = 8774^2 + 6873^2 .

It is not a de Polignac number, because 124221205 - 2³ = 124221197 is a prime.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 286669 + ... + 287101.

It is an arithmetic number, because the mean of its divisors is an integer number (9419319).

Almost surely, 2^124221205 is an apocalyptic number.

It is an amenable number.

124221205 is a deficient number, since it is larger than the sum of its proper divisors (26487899).

124221205 is a wasteful number, since it uses less digits than its factorization.

124221205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 124221205 is about 11145.4566976863. The cubic root of 124221205 is about 498.9594426497.

Adding to 124221205 its reverse (502122421), we get a palindrome (626343626).

The spelling of 124221205 in words is "one hundred twenty-four million, two hundred twenty-one thousand, two hundred five".