1442475409 has 2 divisors, whose sum is σ = 1442475410. Its totient is φ = 1442475408.

The previous prime is 1442475403. The next prime is 1442475413. The reversal of 1442475409 is 9045742441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1052807809 + 389667600 = 32447^2 + 19740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442475409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1442475403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721237704 + 721237705.

It is an arithmetic number, because the mean of its divisors is an integer number (721237705).

Almost surely, 2^1442475409 is an apocalyptic number.

It is an amenable number.

1442475409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442475409 is an equidigital number, since it uses as much as digits as its factorization.

1442475409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 1442475409 is about 37979.9342943086. The cubic root of 1442475409 is about 1129.8899334150.

The spelling of 1442475409 in words is "one billion, four hundred forty-two million, four hundred seventy-five thousand, four hundred nine".