124399643 has 2 divisors, whose sum is σ = 124399644. Its totient is φ = 124399642.

The previous prime is 124399619. The next prime is 124399703. The reversal of 124399643 is 346993421.

It is a weak prime.

It is an emirp because it is prime and its reverse (346993421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124399643 - 2¹⁰ = 124398619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124399643.

It is not a weakly prime, because it can be changed into another prime (124399343) 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 as a sum of consecutive naturals, namely, 62199821 + 62199822.

It is an arithmetic number, because the mean of its divisors is an integer number (62199822).

Almost surely, 2^124399643 is an apocalyptic number.

124399643 is a deficient number, since it is larger than the sum of its proper divisors (1).

124399643 is an equidigital number, since it uses as much as digits as its factorization.

124399643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 41.

The square root of 124399643 is about 11153.4587908863. The cubic root of 124399643 is about 499.1982390459.

The spelling of 124399643 in words is "one hundred twenty-four million, three hundred ninety-nine thousand, six hundred forty-three".