34140643 has 2 divisors, whose sum is σ = 34140644. Its totient is φ = 34140642.

The previous prime is 34140637. The next prime is 34140679. The reversal of 34140643 is 34604143.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34140643 - 2⁵ = 34140611 is a prime.

It is equal to p_2097430 and since 34140643 and 2097430 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (34140683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17070321 + 17070322.

It is an arithmetic number, because the mean of its divisors is an integer number (17070322).

Almost surely, 2^34140643 is an apocalyptic number.

34140643 is a deficient number, since it is larger than the sum of its proper divisors (1).

34140643 is an equidigital number, since it uses as much as digits as its factorization.

34140643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 34140643 is about 5842.9994865651. Note that the first 3 decimals coincide. The cubic root of 34140643 is about 324.4072604389.

Adding to 34140643 its reverse (34604143), we get a palindrome (68744786).

The spelling of 34140643 in words is "thirty-four million, one hundred forty thousand, six hundred forty-three".