1344240257 has 2 divisors, whose sum is σ = 1344240258. Its totient is φ = 1344240256.

The previous prime is 1344240241. The next prime is 1344240349. The reversal of 1344240257 is 7520424431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1337291761 + 6948496 = 36569^2 + 2636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344240257 - 2⁴ = 1344240241 is a prime.

It is not a weakly prime, because it can be changed into another prime (1344240217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672120128 + 672120129.

It is an arithmetic number, because the mean of its divisors is an integer number (672120129).

Almost surely, 2^1344240257 is an apocalyptic number.

It is an amenable number.

1344240257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344240257 is an equidigital number, since it uses as much as digits as its factorization.

1344240257 is an evil number, because the sum of its binary digits is even.

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

The square root of 1344240257 is about 36663.8821866970. The cubic root of 1344240257 is about 1103.6354256469.

Adding to 1344240257 its reverse (7520424431), we get a palindrome (8864664688).

The spelling of 1344240257 in words is "one billion, three hundred forty-four million, two hundred forty thousand, two hundred fifty-seven".