1442440451 has 2 divisors, whose sum is σ = 1442440452. Its totient is φ = 1442440450.

The previous prime is 1442440427. The next prime is 1442440453. The reversal of 1442440451 is 1540442441.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442440451 is a prime.

Together with 1442440453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1442440453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721220225 + 721220226.

It is an arithmetic number, because the mean of its divisors is an integer number (721220226).

Almost surely, 2^1442440451 is an apocalyptic number.

1442440451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442440451 is an equidigital number, since it uses as much as digits as its factorization.

1442440451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 1442440451 is about 37979.4740748210. The cubic root of 1442440451 is about 1129.8808058159.

Adding to 1442440451 its reverse (1540442441), we get a palindrome (2982882892).

The spelling of 1442440451 in words is "one billion, four hundred forty-two million, four hundred forty thousand, four hundred fifty-one".