432222421 has 4 divisors (see below), whose sum is σ = 432454572. Its totient is φ = 431990272.

The previous prime is 432222407. The next prime is 432222437. The reversal of 432222421 is 124222234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124222234 = 2 ⋅62111117.

It can be written as a sum of positive squares in 2 ways, for example, as 210540100 + 221682321 = 14510^2 + 14889^2 .

It is a cyclic number.

It is not a de Polignac number, because 432222421 - 2¹⁷ = 432091349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 432222392 and 432222401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432222821) 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, 113260 + ... + 117013.

It is an arithmetic number, because the mean of its divisors is an integer number (108113643).

Almost surely, 2^432222421 is an apocalyptic number.

It is an amenable number.

432222421 is a deficient number, since it is larger than the sum of its proper divisors (232151).

432222421 is a wasteful number, since it uses less digits than its factorization.

432222421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232150.

The product of its digits is 1536, while the sum is 22.

The square root of 432222421 is about 20789.9596199704. The cubic root of 432222421 is about 756.0823451312.

Adding to 432222421 its reverse (124222234), we get a palindrome (556444655).

The spelling of 432222421 in words is "four hundred thirty-two million, two hundred twenty-two thousand, four hundred twenty-one".