84057143 has 2 divisors, whose sum is σ = 84057144. Its totient is φ = 84057142.

The previous prime is 84057137. The next prime is 84057161. The reversal of 84057143 is 34175048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84057143 - 2⁶ = 84057079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84057173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42028571 + 42028572.

It is an arithmetic number, because the mean of its divisors is an integer number (42028572).

Almost surely, 2^84057143 is an apocalyptic number.

84057143 is a deficient number, since it is larger than the sum of its proper divisors (1).

84057143 is an equidigital number, since it uses as much as digits as its factorization.

84057143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 84057143 is about 9168.2682661449. The cubic root of 84057143 is about 438.0512005505.

The spelling of 84057143 in words is "eighty-four million, fifty-seven thousand, one hundred forty-three".