1240099873 has 2 divisors, whose sum is σ = 1240099874. Its totient is φ = 1240099872.

The previous prime is 1240099859. The next prime is 1240099907. The reversal of 1240099873 is 3789900421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 640241809 + 599858064 = 25303^2 + 24492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240099873 is a prime.

It is a super-2 number, since 2×1240099873² = 3075695390029232258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1240099813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620049936 + 620049937.

It is an arithmetic number, because the mean of its divisors is an integer number (620049937).

Almost surely, 2^1240099873 is an apocalyptic number.

It is an amenable number.

1240099873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240099873 is an equidigital number, since it uses as much as digits as its factorization.

1240099873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1240099873 is about 35215.0517960715. The cubic root of 1240099873 is about 1074.3659135658.

The spelling of 1240099873 in words is "one billion, two hundred forty million, ninety-nine thousand, eight hundred seventy-three".