1292657 has 2 divisors, whose sum is σ = 1292658. Its totient is φ = 1292656.

The previous prime is 1292653. The next prime is 1292659. The reversal of 1292657 is 7562921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1018081 + 274576 = 1009^2 + 524^2 .

It is an emirp because it is prime and its reverse (7562921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1292657 - 2² = 1292653 is a prime.

Together with 1292659, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1292653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646328 + 646329.

It is an arithmetic number, because the mean of its divisors is an integer number (646329).

2^1292657 is an apocalyptic number.

It is an amenable number.

1292657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292657 is an equidigital number, since it uses as much as digits as its factorization.

1292657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 1292657 is about 1136.9507465146. The cubic root of 1292657 is about 108.9334104964.

The spelling of 1292657 in words is "one million, two hundred ninety-two thousand, six hundred fifty-seven".