124451213 has 2 divisors, whose sum is σ = 124451214. Its totient is φ = 124451212.

The previous prime is 124451191. The next prime is 124451221. The reversal of 124451213 is 312154421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123365449 + 1085764 = 11107^2 + 1042^2 .

It is an emirp because it is prime and its reverse (312154421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124451213 - 2¹⁰ = 124450189 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124451263) by changing a digit.

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 as a sum of consecutive naturals, namely, 62225606 + 62225607.

It is an arithmetic number, because the mean of its divisors is an integer number (62225607).

Almost surely, 2^124451213 is an apocalyptic number.

It is an amenable number.

124451213 is a deficient number, since it is larger than the sum of its proper divisors (1).

124451213 is an equidigital number, since it uses as much as digits as its factorization.

124451213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 124451213 is about 11155.7703902510. The cubic root of 124451213 is about 499.2672105639.

The spelling of 124451213 in words is "one hundred twenty-four million, four hundred fifty-one thousand, two hundred thirteen".