34147021 has 2 divisors, whose sum is σ = 34147022. Its totient is φ = 34147020.

The previous prime is 34146997. The next prime is 34147037. The reversal of 34147021 is 12074143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21622500 + 12524521 = 4650^2 + 3539^2 .

It is an emirp because it is prime and its reverse (12074143) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34147021 - 2¹⁹ = 33622733 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 34146983 and 34147001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34147121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17073510 + 17073511.

It is an arithmetic number, because the mean of its divisors is an integer number (17073511).

Almost surely, 2^34147021 is an apocalyptic number.

It is an amenable number.

34147021 is a deficient number, since it is larger than the sum of its proper divisors (1).

34147021 is an equidigital number, since it uses as much as digits as its factorization.

34147021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 34147021 is about 5843.5452424021. The cubic root of 34147021 is about 324.4274606118.

The spelling of 34147021 in words is "thirty-four million, one hundred forty-seven thousand, twenty-one".