1290901 has 2 divisors, whose sum is σ = 1290902. Its totient is φ = 1290900.

The previous prime is 1290869. The next prime is 1290907. The reversal of 1290901 is 1090921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 948676 + 342225 = 974^2 + 585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290901 - 2⁵ = 1290869 is a prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290907) 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 as a sum of consecutive naturals, namely, 645450 + 645451.

It is an arithmetic number, because the mean of its divisors is an integer number (645451).

2^1290901 is an apocalyptic number.

It is an amenable number.

1290901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290901 is an equidigital number, since it uses as much as digits as its factorization.

1290901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1290901 is about 1136.1782430587. The cubic root of 1290901 is about 108.8840615581.

The spelling of 1290901 in words is "one million, two hundred ninety thousand, nine hundred one".