1420422321 has 4 divisors (see below), whose sum is σ = 1893896432. Its totient is φ = 946948212.

The previous prime is 1420422319. The next prime is 1420422337. The reversal of 1420422321 is 1232240241.

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 not a de Polignac number, because 1420422321 - 2¹ = 1420422319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420422721) 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, 236737051 + ... + 236737056.

It is an arithmetic number, because the mean of its divisors is an integer number (473474108).

Almost surely, 2^1420422321 is an apocalyptic number.

It is an amenable number.

1420422321 is a deficient number, since it is larger than the sum of its proper divisors (473474111).

1420422321 is an equidigital number, since it uses as much as digits as its factorization.

1420422321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473474110.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1420422321 is about 37688.4905640966. The cubic root of 1420422321 is about 1124.1022819605.

Adding to 1420422321 its reverse (1232240241), we get a palindrome (2652662562).

The spelling of 1420422321 in words is "one billion, four hundred twenty million, four hundred twenty-two thousand, three hundred twenty-one".