124421189 has 2 divisors, whose sum is σ = 124421190. Its totient is φ = 124421188.

The previous prime is 124421161. The next prime is 124421207. The reversal of 124421189 is 981124421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123988225 + 432964 = 11135^2 + 658^2 .

It is a cyclic number.

It is not a de Polignac number, because 124421189 - 2¹⁶ = 124355653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124421119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62210594 + 62210595.

It is an arithmetic number, because the mean of its divisors is an integer number (62210595).

Almost surely, 2^124421189 is an apocalyptic number.

It is an amenable number.

124421189 is a deficient number, since it is larger than the sum of its proper divisors (1).

124421189 is an equidigital number, since it uses as much as digits as its factorization.

124421189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 32.

The square root of 124421189 is about 11154.4246377839. The cubic root of 124421189 is about 499.2270577362.

It can be divided in two parts, 12442 and 1189, that added together give a palindrome (13631).

The spelling of 124421189 in words is "one hundred twenty-four million, four hundred twenty-one thousand, one hundred eighty-nine".