84427141 has 2 divisors, whose sum is σ = 84427142. Its totient is φ = 84427140.

The previous prime is 84427139. The next prime is 84427153. The reversal of 84427141 is 14172448.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48246916 + 36180225 = 6946^2 + 6015^2 .

It is a cyclic number.

It is not a de Polignac number, because 84427141 - 2¹ = 84427139 is a prime.

Together with 84427139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84427121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42213570 + 42213571.

It is an arithmetic number, because the mean of its divisors is an integer number (42213571).

Almost surely, 2^84427141 is an apocalyptic number.

It is an amenable number.

84427141 is a deficient number, since it is larger than the sum of its proper divisors (1).

84427141 is an equidigital number, since it uses as much as digits as its factorization.

84427141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7168, while the sum is 31.

The square root of 84427141 is about 9188.4242936425. The cubic root of 84427141 is about 438.6929895108.

Adding to 84427141 its reverse (14172448), we get a palindrome (98599589).

The spelling of 84427141 in words is "eighty-four million, four hundred twenty-seven thousand, one hundred forty-one".