430442421 has 4 divisors (see below), whose sum is σ = 573923232. Its totient is φ = 286961612.

The previous prime is 430442393. The next prime is 430442437. The reversal of 430442421 is 124244034.

It is a happy number.

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 430442421 - 2⁶ = 430442357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 430442391 and 430442400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430442021) 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, 71740401 + ... + 71740406.

It is an arithmetic number, because the mean of its divisors is an integer number (143480808).

Almost surely, 2^430442421 is an apocalyptic number.

It is an amenable number.

430442421 is a deficient number, since it is larger than the sum of its proper divisors (143480811).

430442421 is a wasteful number, since it uses less digits than its factorization.

430442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143480810.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 430442421 is about 20747.1063283534. The cubic root of 430442421 is about 755.0430050208.

Adding to 430442421 its reverse (124244034), we get a palindrome (554686455).

The spelling of 430442421 in words is "four hundred thirty million, four hundred forty-two thousand, four hundred twenty-one".