34212905 has 4 divisors (see below), whose sum is σ = 41055492. Its totient is φ = 27370320.

The previous prime is 34212889. The next prime is 34212923. The reversal of 34212905 is 50921243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50921243 = 103 ⋅494381.

It can be written as a sum of positive squares in 2 ways, for example, as 26666896 + 7546009 = 5164^2 + 2747^2 .

It is not a de Polignac number, because 34212905 - 2⁴ = 34212889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3421286 + ... + 3421295.

It is an arithmetic number, because the mean of its divisors is an integer number (10263873).

Almost surely, 2^34212905 is an apocalyptic number.

It is an amenable number.

34212905 is a deficient number, since it is larger than the sum of its proper divisors (6842587).

34212905 is an equidigital number, since it uses as much as digits as its factorization.

34212905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842586.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 34212905 is about 5849.1798570398. The cubic root of 34212905 is about 324.6359790130.

The spelling of 34212905 in words is "thirty-four million, two hundred twelve thousand, nine hundred five".