124379999 has 2 divisors, whose sum is σ = 124380000. Its totient is φ = 124379998.

The previous prime is 124379993. The next prime is 124380013. The reversal of 124379999 is 999973421.

It is a weak prime.

It is an emirp because it is prime and its reverse (999973421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124379999 - 2⁸ = 124379743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124379999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124379993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62189999 + 62190000.

It is an arithmetic number, because the mean of its divisors is an integer number (62190000).

Almost surely, 2^124379999 is an apocalyptic number.

124379999 is a deficient number, since it is larger than the sum of its proper divisors (1).

124379999 is an equidigital number, since it uses as much as digits as its factorization.

124379999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248, while the sum is 53.

The square root of 124379999 is about 11152.5781324320. The cubic root of 124379999 is about 499.1719614613.

The spelling of 124379999 in words is "one hundred twenty-four million, three hundred seventy-nine thousand, nine hundred ninety-nine".