1290971 has 4 divisors (see below), whose sum is σ = 1408344. Its totient is φ = 1173600.

The previous prime is 1290937. The next prime is 1290983. The reversal of 1290971 is 1790921.

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 1290971 - 2⁶ = 1290907 is a prime.

It is a super-2 number, since 2×1290971² = 3333212245682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1290901) 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 3 ways as a sum of consecutive naturals, for example, 58670 + ... + 58691.

It is an arithmetic number, because the mean of its divisors is an integer number (352086).

2^1290971 is an apocalyptic number.

1290971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1290971 is a deficient number, since it is larger than the sum of its proper divisors (117373).

1290971 is a wasteful number, since it uses less digits than its factorization.

1290971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117372.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 1290971 is about 1136.2090476668. The cubic root of 1290971 is about 108.8860296271.

The spelling of 1290971 in words is "one million, two hundred ninety thousand, nine hundred seventy-one".