1292897 has 4 divisors (see below), whose sum is σ = 1295556. Its totient is φ = 1290240.

The previous prime is 1292887. The next prime is 1292927. The reversal of 1292897 is 7982921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7982921 = 307 ⋅26003.

It can be written as a sum of positive squares in 2 ways, for example, as 1132096 + 160801 = 1064^2 + 401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1292897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1292897.

It is not an unprimeable number, because it can be changed into a prime (1292857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368 + ... + 1649.

It is an arithmetic number, because the mean of its divisors is an integer number (323889).

2^1292897 is an apocalyptic number.

It is an amenable number.

1292897 is a deficient number, since it is larger than the sum of its proper divisors (2659).

1292897 is an equidigital number, since it uses as much as digits as its factorization.

1292897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658.

The product of its digits is 18144, while the sum is 38.

The square root of 1292897 is about 1137.0562870852. The cubic root of 1292897 is about 108.9401517538.

The spelling of 1292897 in words is "one million, two hundred ninety-two thousand, eight hundred ninety-seven".