124099939 has 2 divisors, whose sum is σ = 124099940. Its totient is φ = 124099938.

The previous prime is 124099933. The next prime is 124099979. The reversal of 124099939 is 939990421.

It is a weak prime.

It is an emirp because it is prime and its reverse (939990421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124099939 - 2³ = 124099931 is a prime.

It is not a weakly prime, because it can be changed into another prime (124099931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62049969 + 62049970.

It is an arithmetic number, because the mean of its divisors is an integer number (62049970).

Almost surely, 2^124099939 is an apocalyptic number.

124099939 is a deficient number, since it is larger than the sum of its proper divisors (1).

124099939 is an equidigital number, since it uses as much as digits as its factorization.

124099939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 124099939 is about 11140.0152154295. The cubic root of 124099939 is about 498.7970266983.

The spelling of 124099939 in words is "one hundred twenty-four million, ninety-nine thousand, nine hundred thirty-nine".