34130021 has 8 divisors (see below), whose sum is σ = 35403384. Its totient is φ = 32875200.

The previous prime is 34130017. The next prime is 34130029. The reversal of 34130021 is 12003143.

It can be written as a sum of positive squares in 4 ways, for example, as 26368225 + 7761796 = 5135^2 + 2786^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34130021 - 2² = 34130017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34129978 and 34130005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34130029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (4425423).

Almost surely, 2^34130021 is an apocalyptic number.

It is an amenable number.

34130021 is a deficient number, since it is larger than the sum of its proper divisors (1273363).

34130021 is a wasteful number, since it uses less digits than its factorization.

34130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9271.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 34130021 is about 5842.0904648935. The cubic root of 34130021 is about 324.3736132368.

Adding to 34130021 its reverse (12003143), we get a palindrome (46133164).

The spelling of 34130021 in words is "thirty-four million, one hundred thirty thousand, twenty-one".