72034543 has 4 divisors (see below), whose sum is σ = 82325200. Its totient is φ = 61743888.

The previous prime is 72034531. The next prime is 72034601. The reversal of 72034543 is 34543027.

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 72034543 - 2⁹ = 72034031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72031543) 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, 5145318 + ... + 5145331.

It is an arithmetic number, because the mean of its divisors is an integer number (20581300).

Almost surely, 2^72034543 is an apocalyptic number.

72034543 is a deficient number, since it is larger than the sum of its proper divisors (10290657).

72034543 is a wasteful number, since it uses less digits than its factorization.

72034543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10290656.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 72034543 is about 8487.3165959566. The cubic root of 72034543 is about 416.0832839139.

The spelling of 72034543 in words is "seventy-two million, thirty-four thousand, five hundred forty-three".