434032021 has 4 divisors (see below), whose sum is σ = 434391052. Its totient is φ = 433672992.

The previous prime is 434032007. The next prime is 434032033. The reversal of 434032021 is 120230434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120230434 = 2 ⋅60115217.

It can be written as a sum of positive squares in 2 ways, for example, as 224100900 + 209931121 = 14970^2 + 14489^2 .

It is a cyclic number.

It is not a de Polignac number, because 434032021 - 2⁵ = 434031989 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 434032021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434032051) 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, 177696 + ... + 180121.

It is an arithmetic number, because the mean of its divisors is an integer number (108597763).

Almost surely, 2^434032021 is an apocalyptic number.

It is an amenable number.

434032021 is a deficient number, since it is larger than the sum of its proper divisors (359031).

434032021 is a wasteful number, since it uses less digits than its factorization.

434032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359030.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 434032021 is about 20833.4351704178. The cubic root of 434032021 is about 757.1360476816.

Adding to 434032021 its reverse (120230434), we get a palindrome (554262455).

It can be divided in two parts, 43 and 4032021, that added together give a square (4032064 = 2008²).

The spelling of 434032021 in words is "four hundred thirty-four million, thirty-two thousand, twenty-one".