34420145 has 4 divisors (see below), whose sum is σ = 41304180. Its totient is φ = 27536112.

The previous prime is 34420109. The next prime is 34420151. The reversal of 34420145 is 54102443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54102443 = 19 ⋅2847497.

It can be written as a sum of positive squares in 2 ways, for example, as 17247409 + 17172736 = 4153^2 + 4144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34420145 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 34420145.

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, 3442010 + ... + 3442019.

It is an arithmetic number, because the mean of its divisors is an integer number (10326045).

Almost surely, 2^34420145 is an apocalyptic number.

It is an amenable number.

34420145 is a deficient number, since it is larger than the sum of its proper divisors (6884035).

34420145 is an equidigital number, since it uses as much as digits as its factorization.

34420145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884034.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 34420145 is about 5866.8684150916. The cubic root of 34420145 is about 325.2901393271.

Adding to 34420145 its reverse (54102443), we get a palindrome (88522588).

The spelling of 34420145 in words is "thirty-four million, four hundred twenty thousand, one hundred forty-five".