1292257 has 2 divisors, whose sum is σ = 1292258. Its totient is φ = 1292256.

The previous prime is 1292251. The next prime is 1292261. The reversal of 1292257 is 7522921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1218816 + 73441 = 1104^2 + 271^2 .

It is a cyclic number.

It is not a de Polignac number, because 1292257 - 2¹¹ = 1290209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1292251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646128 + 646129.

It is an arithmetic number, because the mean of its divisors is an integer number (646129).

2^1292257 is an apocalyptic number.

It is an amenable number.

1292257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292257 is an equidigital number, since it uses as much as digits as its factorization.

1292257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 1292257 is about 1136.7748237888. The cubic root of 1292257 is about 108.9221732130.

The spelling of 1292257 in words is "one million, two hundred ninety-two thousand, two hundred fifty-seven".