85142227 has 2 divisors, whose sum is σ = 85142228. Its totient is φ = 85142226.

The previous prime is 85142203. The next prime is 85142237. The reversal of 85142227 is 72224158.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85142227 - 2¹¹ = 85140179 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85142237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42571113 + 42571114.

It is an arithmetic number, because the mean of its divisors is an integer number (42571114).

Almost surely, 2^85142227 is an apocalyptic number.

85142227 is a deficient number, since it is larger than the sum of its proper divisors (1).

85142227 is an equidigital number, since it uses as much as digits as its factorization.

85142227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 31.

The square root of 85142227 is about 9227.2545754412. The cubic root of 85142227 is about 439.9280650307.

The spelling of 85142227 in words is "eighty-five million, one hundred forty-two thousand, two hundred twenty-seven".