72234143 has 4 divisors (see below), whose sum is σ = 76035960. Its totient is φ = 68432328.

The previous prime is 72234133. The next prime is 72234161. The reversal of 72234143 is 34143227.

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 72234143 - 2⁶ = 72234079 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 (72234103) 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, 1900880 + ... + 1900917.

It is an arithmetic number, because the mean of its divisors is an integer number (19008990).

Almost surely, 2^72234143 is an apocalyptic number.

72234143 is a deficient number, since it is larger than the sum of its proper divisors (3801817).

72234143 is a wasteful number, since it uses less digits than its factorization.

72234143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3801816.

The product of its digits is 4032, while the sum is 26.

The square root of 72234143 is about 8499.0671841091. The cubic root of 72234143 is about 416.4672368997.

The spelling of 72234143 in words is "seventy-two million, two hundred thirty-four thousand, one hundred forty-three".