1423033621 has 4 divisors (see below), whose sum is σ = 1484904672. Its totient is φ = 1361162572.

The previous prime is 1423033613. The next prime is 1423033631. The reversal of 1423033621 is 1263303241.

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 1423033621 - 2³ = 1423033613 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 (1423033631) 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, 30935491 + ... + 30935536.

It is an arithmetic number, because the mean of its divisors is an integer number (371226168).

Almost surely, 2^1423033621 is an apocalyptic number.

It is an amenable number.

1423033621 is a deficient number, since it is larger than the sum of its proper divisors (61871051).

1423033621 is an equidigital number, since it uses as much as digits as its factorization.

1423033621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61871050.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 1423033621 is about 37723.1178589469. The cubic root of 1423033621 is about 1124.7907089844.

Adding to 1423033621 its reverse (1263303241), we get a palindrome (2686336862).

It can be divided in two parts, 142303 and 3621, that added together give a square (145924 = 382²).

The spelling of 1423033621 in words is "one billion, four hundred twenty-three million, thirty-three thousand, six hundred twenty-one".