85305742 has 4 divisors (see below), whose sum is σ = 127958616. Its totient is φ = 42652870.

The previous prime is 85305739. The next prime is 85305749. The reversal of 85305742 is 24750358.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 85305698 and 85305707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85305749) 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, 21326434 + ... + 21326437.

It is an arithmetic number, because the mean of its divisors is an integer number (31989654).

Almost surely, 2^85305742 is an apocalyptic number.

85305742 is a deficient number, since it is larger than the sum of its proper divisors (42652874).

85305742 is a wasteful number, since it uses less digits than its factorization.

85305742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42652873.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 85305742 is about 9236.1107615706. The cubic root of 85305742 is about 440.2095111046.

The spelling of 85305742 in words is "eighty-five million, three hundred five thousand, seven hundred forty-two".