1296158 has 4 divisors (see below), whose sum is σ = 1944240. Its totient is φ = 648078.

The previous prime is 1296143. The next prime is 1296167. The reversal of 1296158 is 8516921.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324038 + ... + 324041.

It is an arithmetic number, because the mean of its divisors is an integer number (486060).

2^1296158 is an apocalyptic number.

1296158 is a deficient number, since it is larger than the sum of its proper divisors (648082).

1296158 is an equidigital number, since it uses as much as digits as its factorization.

1296158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648081.

The product of its digits is 4320, while the sum is 32.

The square root of 1296158 is about 1138.4893499721. The cubic root of 1296158 is about 109.0316660234.

The spelling of 1296158 in words is "one million, two hundred ninety-six thousand, one hundred fifty-eight".