1298971 has 4 divisors (see below), whose sum is σ = 1355472. Its totient is φ = 1242472.

The previous prime is 1298963. The next prime is 1298981. The reversal of 1298971 is 1798921.

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

It is a cyclic number.

It is not a de Polignac number, because 1298971 - 2³ = 1298963 is a prime.

It is a Duffinian number.

1298971 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1298971.

It is not an unprimeable number, because it can be changed into a prime (1298911) 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, 28216 + ... + 28261.

It is an arithmetic number, because the mean of its divisors is an integer number (338868).

2^1298971 is an apocalyptic number.

1298971 is a deficient number, since it is larger than the sum of its proper divisors (56501).

1298971 is an equidigital number, since it uses as much as digits as its factorization.

1298971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56500.

The product of its digits is 9072, while the sum is 37.

The square root of 1298971 is about 1139.7240894181. The cubic root of 1298971 is about 109.1104847236.

The spelling of 1298971 in words is "one million, two hundred ninety-eight thousand, nine hundred seventy-one".