67742443 has 4 divisors (see below), whose sum is σ = 68890680. Its totient is φ = 66594208.

The previous prime is 67742413. The next prime is 67742459. The reversal of 67742443 is 34424776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67742443 - 2²¹ = 65645291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67742413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574030 + ... + 574147.

It is an arithmetic number, because the mean of its divisors is an integer number (17222670).

Almost surely, 2^67742443 is an apocalyptic number.

67742443 is a deficient number, since it is larger than the sum of its proper divisors (1148237).

67742443 is a wasteful number, since it uses less digits than its factorization.

67742443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148236.

The product of its digits is 112896, while the sum is 37.

The square root of 67742443 is about 8230.5797487176. The cubic root of 67742443 is about 407.6495352440.

The spelling of 67742443 in words is "sixty-seven million, seven hundred forty-two thousand, four hundred forty-three".