85142269 has 2 divisors, whose sum is σ = 85142270. Its totient is φ = 85142268.

The previous prime is 85142263. The next prime is 85142303. The reversal of 85142269 is 96224158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76790169 + 8352100 = 8763^2 + 2890^2 .

It is a cyclic number.

It is not a de Polignac number, because 85142269 - 2⁵ = 85142237 is a prime.

It is a super-2 number, since 2×85142269² = 14498411940936722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85142263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42571134 + 42571135.

It is an arithmetic number, because the mean of its divisors is an integer number (42571135).

Almost surely, 2^85142269 is an apocalyptic number.

It is an amenable number.

85142269 is a deficient number, since it is larger than the sum of its proper divisors (1).

85142269 is an equidigital number, since it uses as much as digits as its factorization.

85142269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 85142269 is about 9227.2568513074. The cubic root of 85142269 is about 439.9281373684.

The spelling of 85142269 in words is "eighty-five million, one hundred forty-two thousand, two hundred sixty-nine".