124742399 has 2 divisors, whose sum is σ = 124742400. Its totient is φ = 124742398.

The previous prime is 124742393. The next prime is 124742417. The reversal of 124742399 is 993247421.

It is a weak prime.

It is an emirp because it is prime and its reverse (993247421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124742399 - 2⁸ = 124742143 is a prime.

It is a super-2 number, since 2×124742399² = 31121332216550402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124742393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62371199 + 62371200.

It is an arithmetic number, because the mean of its divisors is an integer number (62371200).

Almost surely, 2^124742399 is an apocalyptic number.

124742399 is a deficient number, since it is larger than the sum of its proper divisors (1).

124742399 is an equidigital number, since it uses as much as digits as its factorization.

124742399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 124742399 is about 11168.8136791693. The cubic root of 124742399 is about 499.6562957890.

The spelling of 124742399 in words is "one hundred twenty-four million, seven hundred forty-two thousand, three hundred ninety-nine".