420334433 has 4 divisors (see below), whose sum is σ = 421254660. Its totient is φ = 419414208.

The previous prime is 420334429. The next prime is 420334441. The reversal of 420334433 is 334433024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 388208209 + 32126224 = 19703^2 + 5668^2 .

It is a cyclic number.

It is not a de Polignac number, because 420334433 - 2² = 420334429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420334403) 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, 459428 + ... + 460341.

It is an arithmetic number, because the mean of its divisors is an integer number (105313665).

Almost surely, 2^420334433 is an apocalyptic number.

It is an amenable number.

420334433 is a deficient number, since it is larger than the sum of its proper divisors (920227).

420334433 is an equidigital number, since it uses as much as digits as its factorization.

420334433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920226.

The product of its (nonzero) digits is 10368, while the sum is 26.

The square root of 420334433 is about 20502.0592380375. The cubic root of 420334433 is about 749.0859578960.

Adding to 420334433 its reverse (334433024), we get a palindrome (754767457).

The spelling of 420334433 in words is "four hundred twenty million, three hundred thirty-four thousand, four hundred thirty-three".