124742393 has 2 divisors, whose sum is σ = 124742394. Its totient is φ = 124742392.

The previous prime is 124742381. The next prime is 124742399. The reversal of 124742393 is 393247421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77228944 + 47513449 = 8788^2 + 6893^2 .

It is a cyclic number.

It is not a de Polignac number, because 124742393 - 2⁶ = 124742329 is a prime.

It is a super-2 number, since 2×124742393² = 31121329222732898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (124742399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62371196 + 62371197.

It is an arithmetic number, because the mean of its divisors is an integer number (62371197).

Almost surely, 2^124742393 is an apocalyptic number.

It is an amenable number.

124742393 is a deficient number, since it is larger than the sum of its proper divisors (1).

124742393 is an equidigital number, since it uses as much as digits as its factorization.

124742393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 124742393 is about 11168.8134105643. The cubic root of 124742393 is about 499.6562877780.

The spelling of 124742393 in words is "one hundred twenty-four million, seven hundred forty-two thousand, three hundred ninety-three".