1290961 has 8 divisors (see below), whose sum is σ = 1482624. Its totient is φ = 1101120.

The previous prime is 1290937. The next prime is 1290983. The reversal of 1290961 is 1690921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1290961 - 2¹⁷ = 1159889 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1881 + ... + 2473.

It is an arithmetic number, because the mean of its divisors is an integer number (185328).

2^1290961 is an apocalyptic number.

It is an amenable number.

1290961 is a deficient number, since it is larger than the sum of its proper divisors (191663).

1290961 is an equidigital number, since it uses as much as digits as its factorization.

1290961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 1290961 is about 1136.2046470597. The cubic root of 1290961 is about 108.8857484787.

The spelling of 1290961 in words is "one million, two hundred ninety thousand, nine hundred sixty-one".