429021 has 12 divisors (see below), whose sum is σ = 629148. Its totient is φ = 281664.

The previous prime is 429017. The next prime is 429043. The reversal of 429021 is 120924.

It can be written as a sum of positive squares in 2 ways, for example, as 168921 + 260100 = 411^2 + 510^2 .

It is not a de Polignac number, because 429021 - 2² = 429017 is a prime.

It is a Curzon number.

429021 is a lucky number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 428985 and 429003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (429521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331 + ... + 983.

It is an arithmetic number, because the mean of its divisors is an integer number (52429).

2⁴²⁹⁰²¹ is an apocalyptic number.

It is an amenable number.

429021 is a deficient number, since it is larger than the sum of its proper divisors (200127).

429021 is a wasteful number, since it uses less digits than its factorization.

429021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 429021 is about 654.9969465578. The cubic root of 429021 is about 75.4210979289.

Adding to 429021 its reverse (120924), we get a palindrome (549945).

The spelling of 429021 in words is "four hundred twenty-nine thousand, twenty-one".