67143243 has 4 divisors (see below), whose sum is σ = 89524328. Its totient is φ = 44762160.

The previous prime is 67143229. The next prime is 67143257. The reversal of 67143243 is 34234176.

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

It is an interprime number because it is at equal distance from previous prime (67143229) and next prime (67143257).

It is not a de Polignac number, because 67143243 - 2⁴ = 67143227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67143243.

It is not an unprimeable number, because it can be changed into a prime (67143143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11190538 + ... + 11190543.

It is an arithmetic number, because the mean of its divisors is an integer number (22381082).

Almost surely, 2^67143243 is an apocalyptic number.

67143243 is a deficient number, since it is larger than the sum of its proper divisors (22381085).

67143243 is a wasteful number, since it uses less digits than its factorization.

67143243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22381084.

The product of its digits is 12096, while the sum is 30.

The square root of 67143243 is about 8194.0980589690. The cubic root of 67143243 is about 406.4440509470. Note that the first 3 decimals are identical.

The spelling of 67143243 in words is "sixty-seven million, one hundred forty-three thousand, two hundred forty-three".