72387143 has 2 divisors, whose sum is σ = 72387144. Its totient is φ = 72387142.

The previous prime is 72387113. The next prime is 72387151. The reversal of 72387143 is 34178327.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72387143 - 2⁸ = 72386887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72387113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36193571 + 36193572.

It is an arithmetic number, because the mean of its divisors is an integer number (36193572).

Almost surely, 2^72387143 is an apocalyptic number.

72387143 is a deficient number, since it is larger than the sum of its proper divisors (1).

72387143 is an equidigital number, since it uses as much as digits as its factorization.

72387143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 35.

The square root of 72387143 is about 8508.0634106711. The cubic root of 72387143 is about 416.7610709470.

The spelling of 72387143 in words is "seventy-two million, three hundred eighty-seven thousand, one hundred forty-three".