1442857219 has 2 divisors, whose sum is σ = 1442857220. Its totient is φ = 1442857218.

The previous prime is 1442857193. The next prime is 1442857223. The reversal of 1442857219 is 9127582441.

It is a strong prime.

It is an emirp because it is prime and its reverse (9127582441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1442857219 - 2²⁵ = 1409302787 is a prime.

It is a super-2 number, since 2×1442857219² = 4163673908840827922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1442857519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721428609 + 721428610.

It is an arithmetic number, because the mean of its divisors is an integer number (721428610).

Almost surely, 2^1442857219 is an apocalyptic number.

1442857219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442857219 is an equidigital number, since it uses as much as digits as its factorization.

1442857219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 1442857219 is about 37984.9604317288. The cubic root of 1442857219 is about 1129.9896151185.

The spelling of 1442857219 in words is "one billion, four hundred forty-two million, eight hundred fifty-seven thousand, two hundred nineteen".