1422440321 has 4 divisors (see below), whose sum is σ = 1460884692. Its totient is φ = 1383995952.

The previous prime is 1422440317. The next prime is 1422440323. The reversal of 1422440321 is 1230442241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 842160400 + 580279921 = 29020^2 + 24089^2 .

It is not a de Polignac number, because 1422440321 - 2² = 1422440317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1422440323) 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, 19222130 + ... + 19222203.

It is an arithmetic number, because the mean of its divisors is an integer number (365221173).

Almost surely, 2^1422440321 is an apocalyptic number.

It is an amenable number.

1422440321 is a deficient number, since it is larger than the sum of its proper divisors (38444371).

1422440321 is an equidigital number, since it uses as much as digits as its factorization.

1422440321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38444370.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1422440321 is about 37715.2531610223. The cubic root of 1422440321 is about 1124.6343690163.

Adding to 1422440321 its reverse (1230442241), we get a palindrome (2652882562).

It can be divided in two parts, 14224 and 40321, that added together give a palindrome (54545).

The spelling of 1422440321 in words is "one billion, four hundred twenty-two million, four hundred forty thousand, three hundred twenty-one".