434023421 has 4 divisors (see below), whose sum is σ = 467409852. Its totient is φ = 400636992.

The previous prime is 434023397. The next prime is 434023453. The reversal of 434023421 is 124320434.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 180768025 + 253255396 = 13445^2 + 15914^2 .

It is a cyclic number.

It is not a de Polignac number, because 434023421 - 2¹⁸ = 433761277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434023021) 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, 16693196 + ... + 16693221.

It is an arithmetic number, because the mean of its divisors is an integer number (116852463).

Almost surely, 2^434023421 is an apocalyptic number.

It is an amenable number.

434023421 is a deficient number, since it is larger than the sum of its proper divisors (33386431).

434023421 is a wasteful number, since it uses less digits than its factorization.

434023421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33386430.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 434023421 is about 20833.2287704043. The cubic root of 434023421 is about 757.1310469653.

Adding to 434023421 its reverse (124320434), we get a palindrome (558343855).

The spelling of 434023421 in words is "four hundred thirty-four million, twenty-three thousand, four hundred twenty-one".