34123643 has 2 divisors, whose sum is σ = 34123644. Its totient is φ = 34123642.

The previous prime is 34123637. The next prime is 34123667. The reversal of 34123643 is 34632143.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34123643 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (34123673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17061821 + 17061822.

It is an arithmetic number, because the mean of its divisors is an integer number (17061822).

Almost surely, 2^34123643 is an apocalyptic number.

34123643 is a deficient number, since it is larger than the sum of its proper divisors (1).

34123643 is an equidigital number, since it uses as much as digits as its factorization.

34123643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 26.

The square root of 34123643 is about 5841.5445731416. The cubic root of 34123643 is about 324.3534063560.

Adding to 34123643 its reverse (34632143), we get a palindrome (68755786).

The spelling of 34123643 in words is "thirty-four million, one hundred twenty-three thousand, six hundred forty-three".