124780240073 has 2 divisors, whose sum is σ = 124780240074. Its totient is φ = 124780240072.

The previous prime is 124780240031. The next prime is 124780240097. The reversal of 124780240073 is 370042087421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91392545344 + 33387694729 = 302312^2 + 182723^2 .

It is a cyclic number.

It is not a de Polignac number, because 124780240073 - 2³⁰ = 123706498249 is a prime.

It is not a weakly prime, because it can be changed into another prime (124780240973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62390120036 + 62390120037.

It is an arithmetic number, because the mean of its divisors is an integer number (62390120037).

Almost surely, 2^124780240073 is an apocalyptic number.

It is an amenable number.

124780240073 is a deficient number, since it is larger than the sum of its proper divisors (1).

124780240073 is an equidigital number, since it uses as much as digits as its factorization.

124780240073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 38.

The spelling of 124780240073 in words is "one hundred twenty-four billion, seven hundred eighty million, two hundred forty thousand, seventy-three".