1432444421 has 4 divisors (see below), whose sum is σ = 1456723200. Its totient is φ = 1408165644.

The previous prime is 1432444411. The next prime is 1432444441. The reversal of 1432444421 is 1244442341.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1244442341 = 211 ⋅5897831.

It is a cyclic number.

It is not a de Polignac number, because 1432444421 - 2¹⁴ = 1432428037 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 (1432444411) 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, 12139301 + ... + 12139418.

It is an arithmetic number, because the mean of its divisors is an integer number (364180800).

Almost surely, 2^1432444421 is an apocalyptic number.

It is an amenable number.

1432444421 is a deficient number, since it is larger than the sum of its proper divisors (24278779).

1432444421 is an equidigital number, since it uses as much as digits as its factorization.

1432444421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24278778.

The product of its digits is 12288, while the sum is 29.

The square root of 1432444421 is about 37847.6474962447. The cubic root of 1432444421 is about 1127.2647502729.

Adding to 1432444421 its reverse (1244442341), we get a palindrome (2676886762).

The spelling of 1432444421 in words is "one billion, four hundred thirty-two million, four hundred forty-four thousand, four hundred twenty-one".