34306421 has 4 divisors (see below), whose sum is σ = 34338252. Its totient is φ = 34274592.

The previous prime is 34306417. The next prime is 34306427. The reversal of 34306421 is 12460343.

It is a happy number.

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 15288100 + 19018321 = 3910^2 + 4361^2 .

It is a cyclic number.

It is not a de Polignac number, because 34306421 - 2² = 34306417 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 (34306427) 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, 14240 + ... + 16473.

It is an arithmetic number, because the mean of its divisors is an integer number (8584563).

Almost surely, 2^34306421 is an apocalyptic number.

It is an amenable number.

34306421 is a deficient number, since it is larger than the sum of its proper divisors (31831).

34306421 is a wasteful number, since it uses less digits than its factorization.

34306421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31830.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 34306421 is about 5857.1683431501. The cubic root of 34306421 is about 324.9314916742.

Adding to 34306421 its reverse (12460343), we get a palindrome (46766764).

The spelling of 34306421 in words is "thirty-four million, three hundred six thousand, four hundred twenty-one".