1296734057 has 2 divisors, whose sum is σ = 1296734058. Its totient is φ = 1296734056.

The previous prime is 1296734029. The next prime is 1296734071. The reversal of 1296734057 is 7504376921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1100846041 + 195888016 = 33179^2 + 13996^2 .

It is an emirp because it is prime and its reverse (7504376921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1296734057 - 2¹⁴ = 1296717673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1296733999 and 1296734017.

It is not a weakly prime, because it can be changed into another prime (1296734027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648367028 + 648367029.

It is an arithmetic number, because the mean of its divisors is an integer number (648367029).

Almost surely, 2^1296734057 is an apocalyptic number.

It is an amenable number.

1296734057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296734057 is an equidigital number, since it uses as much as digits as its factorization.

1296734057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 1296734057 is about 36010.1937928693. The cubic root of 1296734057 is about 1090.4781609978.

The spelling of 1296734057 in words is "one billion, two hundred ninety-six million, seven hundred thirty-four thousand, fifty-seven".