1240280579 has 2 divisors, whose sum is σ = 1240280580. Its totient is φ = 1240280578.

The previous prime is 1240280567. The next prime is 1240280641. The reversal of 1240280579 is 9750820421.

It is a weak prime.

It is an emirp because it is prime and its reverse (9750820421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1240280579 - 2⁴ = 1240280563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1240280179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620140289 + 620140290.

It is an arithmetic number, because the mean of its divisors is an integer number (620140290).

Almost surely, 2^1240280579 is an apocalyptic number.

1240280579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240280579 is an equidigital number, since it uses as much as digits as its factorization.

1240280579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1240280579 is about 35217.6174520651. The cubic root of 1240280579 is about 1074.4180961740.

The spelling of 1240280579 in words is "one billion, two hundred forty million, two hundred eighty thousand, five hundred seventy-nine".