1290973 has 4 divisors (see below), whose sum is σ = 1304380. Its totient is φ = 1277568.

The previous prime is 1290937. The next prime is 1290983. The reversal of 1290973 is 3790921.

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

It can be written as a sum of positive squares in 2 ways, for example, as 205209 + 1085764 = 453^2 + 1042^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290973 - 2¹³ = 1282781 is a prime.

It is a super-2 number, since 2×1290973² = 3333222573458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290923) 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, 6558 + ... + 6751.

It is an arithmetic number, because the mean of its divisors is an integer number (326095).

2^1290973 is an apocalyptic number.

It is an amenable number.

1290973 is a deficient number, since it is larger than the sum of its proper divisors (13407).

1290973 is an equidigital number, since it uses as much as digits as its factorization.

1290973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13406.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 1290973 is about 1136.2099277862. The cubic root of 1290973 is about 108.8860858565.

The spelling of 1290973 in words is "one million, two hundred ninety thousand, nine hundred seventy-three".