1240143812959 has 2 divisors, whose sum is σ = 1240143812960. Its totient is φ = 1240143812958.

The previous prime is 1240143812917. The next prime is 1240143812977. The reversal of 1240143812959 is 9592183410421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1240143812959 - 2¹⁵ = 1240143780191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240143812909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620071906479 + 620071906480.

It is an arithmetic number, because the mean of its divisors is an integer number (620071906480).

Almost surely, 2^{1240143812959} is an apocalyptic number.

1240143812959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240143812959 is an equidigital number, since it uses as much as digits as its factorization.

1240143812959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 1240143812959 in words is "one trillion, two hundred forty billion, one hundred forty-three million, eight hundred twelve thousand, nine hundred fifty-nine".