434160021 has 4 divisors (see below), whose sum is σ = 578880032. Its totient is φ = 289440012.

The previous prime is 434160011. The next prime is 434160031. The reversal of 434160021 is 120061434.

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 an interprime number because it is at equal distance from previous prime (434160011) and next prime (434160031).

It is a de Polignac number, because none of the positive numbers 2^k-434160021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 434160021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434160011) 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 3 ways as a sum of consecutive naturals, for example, 72360001 + ... + 72360006.

It is an arithmetic number, because the mean of its divisors is an integer number (144720008).

Almost surely, 2^434160021 is an apocalyptic number.

It is an amenable number.

434160021 is a deficient number, since it is larger than the sum of its proper divisors (144720011).

434160021 is a wasteful number, since it uses less digits than its factorization.

434160021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144720010.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 434160021 is about 20836.5069289456. The cubic root of 434160021 is about 757.2104691406.

The spelling of 434160021 in words is "four hundred thirty-four million, one hundred sixty thousand, twenty-one".