124224137 has 4 divisors (see below), whose sum is σ = 127254036. Its totient is φ = 121194240.

The previous prime is 124224091. The next prime is 124224143. The reversal of 124224137 is 731422421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 731422421 = 26947 ⋅27143.

It can be written as a sum of positive squares in 2 ways, for example, as 18113536 + 106110601 = 4256^2 + 10301^2 .

It is a cyclic number.

It is not a de Polignac number, because 124224137 - 2⁶ = 124224073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124224187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1514888 + ... + 1514969.

It is an arithmetic number, because the mean of its divisors is an integer number (31813509).

Almost surely, 2^124224137 is an apocalyptic number.

It is an amenable number.

124224137 is a deficient number, since it is larger than the sum of its proper divisors (3029899).

124224137 is an equidigital number, since it uses as much as digits as its factorization.

124224137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029898.

The product of its digits is 2688, while the sum is 26.

The square root of 124224137 is about 11145.5882303268. The cubic root of 124224137 is about 498.9633682746.

Adding to 124224137 its reverse (731422421), we get a palindrome (855646558).

The spelling of 124224137 in words is "one hundred twenty-four million, two hundred twenty-four thousand, one hundred thirty-seven".