1442625439 has 2 divisors, whose sum is σ = 1442625440. Its totient is φ = 1442625438.

The previous prime is 1442625433. The next prime is 1442625463. The reversal of 1442625439 is 9345262441.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1442625439 - 2⁹ = 1442624927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442625433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721312719 + 721312720.

It is an arithmetic number, because the mean of its divisors is an integer number (721312720).

Almost surely, 2^1442625439 is an apocalyptic number.

1442625439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442625439 is an equidigital number, since it uses as much as digits as its factorization.

1442625439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The square root of 1442625439 is about 37981.9093648542. The cubic root of 1442625439 is about 1129.9291048534.

The spelling of 1442625439 in words is "one billion, four hundred forty-two million, six hundred twenty-five thousand, four hundred thirty-nine".