1296445 has 8 divisors (see below), whose sum is σ = 1609560. Its totient is φ = 1001280.

The previous prime is 1296419. The next prime is 1296467. The reversal of 1296445 is 5446921.

It can be written as a sum of positive squares in 4 ways, for example, as 210681 + 1085764 = 459^2 + 1042^2 .

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

It is not a de Polignac number, because 1296445 - 2⁵ = 1296413 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 4326 + ... + 4615.

It is an arithmetic number, because the mean of its divisors is an integer number (201195).

2^1296445 is an apocalyptic number.

It is an amenable number.

1296445 is a deficient number, since it is larger than the sum of its proper divisors (313115).

1296445 is an equidigital number, since it uses as much as digits as its factorization.

1296445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8975.

The product of its digits is 8640, while the sum is 31.

The square root of 1296445 is about 1138.6153872138. The cubic root of 1296445 is about 109.0397128250.

It can be divided in two parts, 129 and 6445, that multiplied together give a triangular number (831405 = T₁₂₈₉).

The spelling of 1296445 in words is "one million, two hundred ninety-six thousand, four hundred forty-five".