420431433 has 8 divisors (see below), whose sum is σ = 561152928. Its totient is φ = 279998784.

The previous prime is 420431423. The next prime is 420431503. The reversal of 420431433 is 334134024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420431433 - 2²⁶ = 353322569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420431423) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 68791 + ... + 74652.

It is an arithmetic number, because the mean of its divisors is an integer number (70144116).

Almost surely, 2^420431433 is an apocalyptic number.

It is an amenable number.

420431433 is a deficient number, since it is larger than the sum of its proper divisors (140721495).

420431433 is a wasteful number, since it uses less digits than its factorization.

420431433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144423.

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

The square root of 420431433 is about 20504.4247176067. The cubic root of 420431433 is about 749.1435753101.

Adding to 420431433 its reverse (334134024), we get a palindrome (754565457).

The spelling of 420431433 in words is "four hundred twenty million, four hundred thirty-one thousand, four hundred thirty-three".