1044423421 has 4 divisors (see below), whose sum is σ = 1045153692. Its totient is φ = 1043693152.

The previous prime is 1044423409. The next prime is 1044423427. The reversal of 1044423421 is 1243244401.

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 602162521 + 442260900 = 24539^2 + 21030^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044423421 - 2⁵ = 1044423389 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 (1044423427) 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, 362986 + ... + 365851.

It is an arithmetic number, because the mean of its divisors is an integer number (261288423).

Almost surely, 2^1044423421 is an apocalyptic number.

It is an amenable number.

1044423421 is a deficient number, since it is larger than the sum of its proper divisors (730271).

1044423421 is an equidigital number, since it uses as much as digits as its factorization.

1044423421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730270.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1044423421 is about 32317.5404540630. The cubic root of 1044423421 is about 1014.5937921740.

Adding to 1044423421 its reverse (1243244401), we get a palindrome (2287667822).

The spelling of 1044423421 in words is "one billion, forty-four million, four hundred twenty-three thousand, four hundred twenty-one".