434273021 has 16 divisors (see below), whose sum is σ = 535277568. Its totient is φ = 343094400.

The previous prime is 434273011. The next prime is 434273023. The reversal of 434273021 is 120372434.

It is a cyclic number.

It is not a de Polignac number, because 434273021 - 2¹⁴ = 434256637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434273023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66116 + ... + 72386.

It is an arithmetic number, because the mean of its divisors is an integer number (33454848).

Almost surely, 2^434273021 is an apocalyptic number.

It is an amenable number.

434273021 is a deficient number, since it is larger than the sum of its proper divisors (101004547).

434273021 is a wasteful number, since it uses less digits than its factorization.

434273021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7052.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 434273021 is about 20839.2183394675. The cubic root of 434273021 is about 757.2761571792.

The spelling of 434273021 in words is "four hundred thirty-four million, two hundred seventy-three thousand, twenty-one".