85471142 has 8 divisors (see below), whose sum is σ = 131333832. Its totient is φ = 41693200.

The previous prime is 85471129. The next prime is 85471171. The reversal of 85471142 is 24117458.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×85471142² = 14610632229568328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85471099 and 85471108.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 521084 + ... + 521247.

It is an arithmetic number, because the mean of its divisors is an integer number (16416729).

Almost surely, 2^85471142 is an apocalyptic number.

85471142 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

85471142 is a deficient number, since it is larger than the sum of its proper divisors (45862690).

85471142 is a wasteful number, since it uses less digits than its factorization.

85471142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042374.

The product of its digits is 8960, while the sum is 32.

The square root of 85471142 is about 9245.0604108356. The cubic root of 85471142 is about 440.4938360294.

The spelling of 85471142 in words is "eighty-five million, four hundred seventy-one thousand, one hundred forty-two".