83420143 has 2 divisors, whose sum is σ = 83420144. Its totient is φ = 83420142.

The previous prime is 83420137. The next prime is 83420147. The reversal of 83420143 is 34102438.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83420143 - 2⁵ = 83420111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83420147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41710071 + 41710072.

It is an arithmetic number, because the mean of its divisors is an integer number (41710072).

Almost surely, 2^83420143 is an apocalyptic number.

83420143 is a deficient number, since it is larger than the sum of its proper divisors (1).

83420143 is an equidigital number, since it uses as much as digits as its factorization.

83420143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 83420143 is about 9133.4628153839. The cubic root of 83420143 is about 436.9418501907.

The spelling of 83420143 in words is "eighty-three million, four hundred twenty thousand, one hundred forty-three".