34530442021 has 4 divisors (see below), whose sum is σ = 34538527372. Its totient is φ = 34522356672.

The previous prime is 34530442019. The next prime is 34530442027. The reversal of 34530442021 is 12024403543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12024403543 = 4549 ⋅2643307.

It can be written as a sum of positive squares in 2 ways, for example, as 15969376900 + 18561065121 = 126370^2 + 136239^2 .

It is a cyclic number.

It is not a de Polignac number, because 34530442021 - 2¹ = 34530442019 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 (34530442027) 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, 4036266 + ... + 4044811.

It is an arithmetic number, because the mean of its divisors is an integer number (8634631843).

Almost surely, 2^34530442021 is an apocalyptic number.

It is an amenable number.

34530442021 is a deficient number, since it is larger than the sum of its proper divisors (8085351).

34530442021 is an equidigital number, since it uses as much as digits as its factorization.

34530442021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8085350.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 34530442021 its reverse (12024403543), we get a palindrome (46554845564).

The spelling of 34530442021 in words is "thirty-four billion, five hundred thirty million, four hundred forty-two thousand, twenty-one".