1293257 has 6 divisors (see below), whose sum is σ = 1504458. Its totient is φ = 1108464.

The previous prime is 1293251. The next prime is 1293277. The reversal of 1293257 is 7523921.

It can be written as a sum of positive squares in only one way, i.e., 1073296 + 219961 = 1036^2 + 469^2 .

It is not a de Polignac number, because 1293257 - 2⁸ = 1293001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1293251) 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 in 5 ways as a sum of consecutive naturals, for example, 13148 + ... + 13245.

It is an arithmetic number, because the mean of its divisors is an integer number (250743).

2^1293257 is an apocalyptic number.

It is an amenable number.

1293257 is a deficient number, since it is larger than the sum of its proper divisors (211201).

1293257 is an equidigital number, since it uses as much as digits as its factorization.

1293257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26407 (or 26400 counting only the distinct ones).

The product of its digits is 3780, while the sum is 29.

The square root of 1293257 is about 1137.2145795759. The cubic root of 1293257 is about 108.9502620759.

The spelling of 1293257 in words is "one million, two hundred ninety-three thousand, two hundred fifty-seven".