240420040297 has 2 divisors, whose sum is σ = 240420040298. Its totient is φ = 240420040296.

The previous prime is 240420040207. The next prime is 240420040307. The reversal of 240420040297 is 792040024042.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196713538576 + 43706501721 = 443524^2 + 209061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240420040297 is a prime.

It is a super-2 number, since 2×240420040297² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240420040207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120210020148 + 120210020149.

It is an arithmetic number, because the mean of its divisors is an integer number (120210020149).

Almost surely, 2^240420040297 is an apocalyptic number.

It is an amenable number.

240420040297 is a deficient number, since it is larger than the sum of its proper divisors (1).

240420040297 is an equidigital number, since it uses as much as digits as its factorization.

240420040297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 240420040297 in words is "two hundred forty billion, four hundred twenty million, forty thousand, two hundred ninety-seven".