1426445 has 4 divisors (see below), whose sum is σ = 1711740. Its totient is φ = 1141152.

The previous prime is 1426429. The next prime is 1426457. The reversal of 1426445 is 5446241.

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 724201 + 702244 = 851^2 + 838^2 .

It is a cyclic number.

It is not a de Polignac number, because 1426445 - 2⁴ = 1426429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142640 + ... + 142649.

It is an arithmetic number, because the mean of its divisors is an integer number (427935).

2^1426445 is an apocalyptic number.

It is an amenable number.

1426445 is a deficient number, since it is larger than the sum of its proper divisors (285295).

1426445 is an equidigital number, since it uses as much as digits as its factorization.

1426445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285294.

The product of its digits is 3840, while the sum is 26.

The square root of 1426445 is about 1194.3387291719. The cubic root of 1426445 is about 112.5688796296.

It can be divided in two parts, 14 and 26445, that multiplied together give a triangular number (370230 = T₈₆₀).

The spelling of 1426445 in words is "one million, four hundred twenty-six thousand, four hundred forty-five".