34135021 has 4 divisors (see below), whose sum is σ = 34779132. Its totient is φ = 33490912.

The previous prime is 34135009. The next prime is 34135027. The reversal of 34135021 is 12053143.

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 17732521 + 16402500 = 4211^2 + 4050^2 .

It is not a de Polignac number, because 34135021 - 2¹⁵ = 34102253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34135021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34135027) 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, 321976 + ... + 322081.

It is an arithmetic number, because the mean of its divisors is an integer number (8694783).

Almost surely, 2^34135021 is an apocalyptic number.

It is an amenable number.

34135021 is a deficient number, since it is larger than the sum of its proper divisors (644111).

34135021 is an equidigital number, since it uses as much as digits as its factorization.

34135021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644110.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 34135021 is about 5842.5183782338. The cubic root of 34135021 is about 324.3894525558.

Adding to 34135021 its reverse (12053143), we get a palindrome (46188164).

The spelling of 34135021 in words is "thirty-four million, one hundred thirty-five thousand, twenty-one".