420439133 has 8 divisors (see below), whose sum is σ = 437996160. Its totient is φ = 403229920.

The previous prime is 420439109. The next prime is 420439141. The reversal of 420439133 is 331934024.

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

It is a cyclic number.

It is not a de Polignac number, because 420439133 - 2⁶ = 420439069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 420439096 and 420439105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420439153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84485 + ... + 89322.

It is an arithmetic number, because the mean of its divisors is an integer number (54749520).

Almost surely, 2^420439133 is an apocalyptic number.

It is an amenable number.

420439133 is a deficient number, since it is larger than the sum of its proper divisors (17557027).

420439133 is a wasteful number, since it uses less digits than its factorization.

420439133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173907.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 420439133 is about 20504.6124810980. The cubic root of 420439133 is about 749.1481486839.

The spelling of 420439133 in words is "four hundred twenty million, four hundred thirty-nine thousand, one hundred thirty-three".