84142243 has 2 divisors, whose sum is σ = 84142244. Its totient is φ = 84142242.

The previous prime is 84142213. The next prime is 84142259. The reversal of 84142243 is 34224148.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84142243 - 2¹³ = 84134051 is a prime.

It is not a weakly prime, because it can be changed into another prime (84142213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42071121 + 42071122.

It is an arithmetic number, because the mean of its divisors is an integer number (42071122).

Almost surely, 2^84142243 is an apocalyptic number.

84142243 is a deficient number, since it is larger than the sum of its proper divisors (1).

84142243 is an equidigital number, since it uses as much as digits as its factorization.

84142243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 28.

The square root of 84142243 is about 9172.9080993979. The cubic root of 84142243 is about 438.1989793221.

The spelling of 84142243 in words is "eighty-four million, one hundred forty-two thousand, two hundred forty-three".