1442204021 has 4 divisors (see below), whose sum is σ = 1453213344. Its totient is φ = 1431194700.

The previous prime is 1442204003. The next prime is 1442204033. The reversal of 1442204021 is 1204022441.

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 1442204021 - 2¹⁰ = 1442202997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1442203984 and 1442204002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442204521) 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, 5504465 + ... + 5504726.

It is an arithmetic number, because the mean of its divisors is an integer number (363303336).

Almost surely, 2^1442204021 is an apocalyptic number.

It is an amenable number.

1442204021 is a deficient number, since it is larger than the sum of its proper divisors (11009323).

1442204021 is a wasteful number, since it uses less digits than its factorization.

1442204021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11009322.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1442204021 is about 37976.3613449209. The cubic root of 1442204021 is about 1129.8190696300.

Adding to 1442204021 its reverse (1204022441), we get a palindrome (2646226462).

The spelling of 1442204021 in words is "one billion, four hundred forty-two million, two hundred four thousand, twenty-one".