2426400257 has 2 divisors, whose sum is σ = 2426400258. Its totient is φ = 2426400256.

The previous prime is 2426400247. The next prime is 2426400329. The reversal of 2426400257 is 7520046242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2026440256 + 399960001 = 45016^2 + 19999^2 .

It is a cyclic number.

It is not a de Polignac number, because 2426400257 - 2²⁶ = 2359291393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2426400247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1213200128 + 1213200129.

It is an arithmetic number, because the mean of its divisors is an integer number (1213200129).

Almost surely, 2^2426400257 is an apocalyptic number.

It is an amenable number.

2426400257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2426400257 is an equidigital number, since it uses as much as digits as its factorization.

2426400257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 2426400257 is about 49258.5044129438. The cubic root of 2426400257 is about 1343.7572314678.

Adding to 2426400257 its reverse (7520046242), we get a palindrome (9946446499).

The spelling of 2426400257 in words is "two billion, four hundred twenty-six million, four hundred thousand, two hundred fifty-seven".