434001404021 has 16 divisors (see below), whose sum is σ = 474584271360. Its totient is φ = 395361570240.

The previous prime is 434001404017. The next prime is 434001404029. The reversal of 434001404021 is 120404100434.

It is a happy number.

It is not a de Polignac number, because 434001404021 - 2² = 434001404017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434001404029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2254166 + ... + 2439111.

It is an arithmetic number, because the mean of its divisors is an integer number (29661516960).

Almost surely, 2^434001404021 is an apocalyptic number.

It is an amenable number.

434001404021 is a deficient number, since it is larger than the sum of its proper divisors (40582867339).

434001404021 is a wasteful number, since it uses less digits than its factorization.

434001404021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693484.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 434001404021 its reverse (120404100434), we get a palindrome (554405504455).

The spelling of 434001404021 in words is "four hundred thirty-four billion, one million, four hundred four thousand, twenty-one".