16143243 has 4 divisors (see below), whose sum is σ = 21524328. Its totient is φ = 10762160.

The previous prime is 16143191. The next prime is 16143247. The reversal of 16143243 is 34234161.

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 16143243 - 2¹³ = 16135051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16143247) 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, 2690538 + ... + 2690543.

It is an arithmetic number, because the mean of its divisors is an integer number (5381082).

Almost surely, 2^16143243 is an apocalyptic number.

16143243 is a deficient number, since it is larger than the sum of its proper divisors (5381085).

16143243 is an equidigital number, since it uses as much as digits as its factorization.

16143243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5381084.

The product of its digits is 1728, while the sum is 24.

The square root of 16143243 is about 4017.8654780866. The cubic root of 16143243 is about 252.7339556266.

The spelling of 16143243 in words is "sixteen million, one hundred forty-three thousand, two hundred forty-three".