434021 has 4 divisors (see below), whose sum is σ = 496032. Its totient is φ = 372012.

The previous prime is 434011. The next prime is 434029. The reversal of 434021 is 120434.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120434 = 2 ⋅60217.

It is a cyclic number.

It is not a de Polignac number, because 434021 - 2¹⁸ = 171877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 433987 and 434005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434029) 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, 30995 + ... + 31008.

It is an arithmetic number, because the mean of its divisors is an integer number (124008).

2⁴³⁴⁰²¹ is an apocalyptic number.

It is an amenable number.

434021 is a deficient number, since it is larger than the sum of its proper divisors (62011).

434021 is an equidigital number, since it uses as much as digits as its factorization.

434021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62010.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 434021 is about 658.8027018767. The cubic root of 434021 is about 75.7129639194.

Adding to 434021 its reverse (120434), we get a palindrome (554455).

The spelling of 434021 in words is "four hundred thirty-four thousand, twenty-one".