1422445021 has 8 divisors (see below), whose sum is σ = 1460403000. Its totient is φ = 1384642560.

The previous prime is 1422444979. The next prime is 1422445043. The reversal of 1422445021 is 1205442241.

It can be written as a sum of positive squares in 4 ways, for example, as 73719396 + 1348725625 = 8586^2 + 36725^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1422445021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422443021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20226 + ... + 57043.

It is an arithmetic number, because the mean of its divisors is an integer number (182550375).

Almost surely, 2^1422445021 is an apocalyptic number.

It is an amenable number.

1422445021 is a deficient number, since it is larger than the sum of its proper divisors (37957979).

1422445021 is an equidigital number, since it uses as much as digits as its factorization.

1422445021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77759.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1422445021 is about 37715.3154699785. The cubic root of 1422445021 is about 1124.6356076800.

Adding to 1422445021 its reverse (1205442241), we get a palindrome (2627887262).

The spelling of 1422445021 in words is "one billion, four hundred twenty-two million, four hundred forty-five thousand, twenty-one".