34087021 has 4 divisors (see below), whose sum is σ = 34497792. Its totient is φ = 33676252.

The previous prime is 34087013. The next prime is 34087043. The reversal of 34087021 is 12078043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 34087021 - 2³ = 34087013 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 (34087051) 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, 205261 + ... + 205426.

It is an arithmetic number, because the mean of its divisors is an integer number (8624448).

Almost surely, 2^34087021 is an apocalyptic number.

It is an amenable number.

34087021 is a deficient number, since it is larger than the sum of its proper divisors (410771).

34087021 is an equidigital number, since it uses as much as digits as its factorization.

34087021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410770.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 34087021 is about 5838.4091155040. The cubic root of 34087021 is about 324.2373311921.

The spelling of 34087021 in words is "thirty-four million, eighty-seven thousand, twenty-one".