1442172416721 has 4 divisors (see below), whose sum is σ = 1922896555632. Its totient is φ = 961448277812.

The previous prime is 1442172416693. The next prime is 1442172416723. The reversal of 1442172416721 is 1276142712441.

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 not a de Polignac number, because 1442172416721 - 2³⁵ = 1407812678353 is a prime.

It is a super-2 number, since 2×1442172416721² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1442172416723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240362069451 + ... + 240362069456.

It is an arithmetic number, because the mean of its divisors is an integer number (480724138908).

Almost surely, 2^{1442172416721} is an apocalyptic number.

It is an amenable number.

1442172416721 is a deficient number, since it is larger than the sum of its proper divisors (480724138911).

1442172416721 is an equidigital number, since it uses as much as digits as its factorization.

1442172416721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480724138910.

The product of its digits is 150528, while the sum is 42.

The spelling of 1442172416721 in words is "one trillion, four hundred forty-two billion, one hundred seventy-two million, four hundred sixteen thousand, seven hundred twenty-one".