434201021 has 8 divisors (see below), whose sum is σ = 450471000. Its totient is φ = 418017600.

The previous prime is 434200951. The next prime is 434201023. The reversal of 434201021 is 120102434.

It can be written as a sum of positive squares in 4 ways, for example, as 169780900 + 264420121 = 13030^2 + 16261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 434201021 - 2¹⁸ = 433938877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434201023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11330 + ... + 31571.

It is an arithmetic number, because the mean of its divisors is an integer number (56308875).

Almost surely, 2^434201021 is an apocalyptic number.

It is an amenable number.

434201021 is a deficient number, since it is larger than the sum of its proper divisors (16269979).

434201021 is a wasteful number, since it uses less digits than its factorization.

434201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43279.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 434201021 is about 20837.4907558468. The cubic root of 434201021 is about 757.2343041711.

Adding to 434201021 its reverse (120102434), we get a palindrome (554303455).

The spelling of 434201021 in words is "four hundred thirty-four million, two hundred one thousand, twenty-one".