1240023440297 has 2 divisors, whose sum is σ = 1240023440298. Its totient is φ = 1240023440296.

The previous prime is 1240023440209. The next prime is 1240023440351. The reversal of 1240023440297 is 7920443200421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 993089978521 + 246933461776 = 996539^2 + 496924^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240023440297 - 2⁸ = 1240023440041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240023440297.

It is not a weakly prime, because it can be changed into another prime (1240023440597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620011720148 + 620011720149.

It is an arithmetic number, because the mean of its divisors is an integer number (620011720149).

Almost surely, 2^{1240023440297} is an apocalyptic number.

It is an amenable number.

1240023440297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240023440297 is an equidigital number, since it uses as much as digits as its factorization.

1240023440297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 1240023440297 in words is "one trillion, two hundred forty billion, twenty-three million, four hundred forty thousand, two hundred ninety-seven".