1442216297 has 4 divisors (see below), whose sum is σ = 1442672016. Its totient is φ = 1441760580.

The previous prime is 1442216263. The next prime is 1442216309. The reversal of 1442216297 is 7926122441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442216297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442216297.

It is not an unprimeable number, because it can be changed into a prime (1442216257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223079 + ... + 229452.

It is an arithmetic number, because the mean of its divisors is an integer number (360668004).

Almost surely, 2^1442216297 is an apocalyptic number.

It is an amenable number.

1442216297 is a deficient number, since it is larger than the sum of its proper divisors (455719).

1442216297 is an equidigital number, since it uses as much as digits as its factorization.

1442216297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455718.

The product of its digits is 48384, while the sum is 38.

The square root of 1442216297 is about 37976.5229714359. The cubic root of 1442216297 is about 1129.8222752836.

The spelling of 1442216297 in words is "one billion, four hundred forty-two million, two hundred sixteen thousand, two hundred ninety-seven".