421433430 has 32 divisors (see below), whose sum is σ = 1103390208. Its totient is φ = 102165600.

The previous prime is 421433377. The next prime is 421433447. The reversal of 421433430 is 34334124.

It is a super-2 number, since 2×421433430² = 355212271843129800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421433430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638206 + ... + 638865.

It is an arithmetic number, because the mean of its divisors is an integer number (34480944).

Almost surely, 2^421433430 is an apocalyptic number.

421433430 is an abundant number, since it is smaller than the sum of its proper divisors (681956778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421433430 is a wasteful number, since it uses less digits than its factorization.

421433430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277092.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 421433430 is about 20528.8438544405. The cubic root of 421433430 is about 749.7382375401.

Adding to 421433430 its reverse (34334124), we get a palindrome (455767554).

The spelling of 421433430 in words is "four hundred twenty-one million, four hundred thirty-three thousand, four hundred thirty".