85427143 has 4 divisors (see below), whose sum is σ = 85446448. Its totient is φ = 85407840.

The previous prime is 85427101. The next prime is 85427161. The reversal of 85427143 is 34172458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85427143 - 2¹³ = 85418951 is a prime.

It is a super-2 number, since 2×85427143² = 14595593522284898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85427099 and 85427108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85427183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655 + ... + 13087.

It is an arithmetic number, because the mean of its divisors is an integer number (21361612).

Almost surely, 2^85427143 is an apocalyptic number.

85427143 is a deficient number, since it is larger than the sum of its proper divisors (19305).

85427143 is a wasteful number, since it uses less digits than its factorization.

85427143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19304.

The product of its digits is 26880, while the sum is 34.

The square root of 85427143 is about 9242.6805094626. The cubic root of 85427143 is about 440.4182369655.

The spelling of 85427143 in words is "eighty-five million, four hundred twenty-seven thousand, one hundred forty-three".