85942237 has 4 divisors (see below), whose sum is σ = 89678880. Its totient is φ = 82205596.

The previous prime is 85942223. The next prime is 85942247. The reversal of 85942237 is 73224958.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85942237 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85942237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85942217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868287 + ... + 1868332.

It is an arithmetic number, because the mean of its divisors is an integer number (22419720).

Almost surely, 2^85942237 is an apocalyptic number.

It is an amenable number.

85942237 is a deficient number, since it is larger than the sum of its proper divisors (3736643).

85942237 is a wasteful number, since it uses less digits than its factorization.

85942237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736642.

The product of its digits is 120960, while the sum is 40.

The square root of 85942237 is about 9270.5036001287. The cubic root of 85942237 is about 441.3016500141.

The spelling of 85942237 in words is "eighty-five million, nine hundred forty-two thousand, two hundred thirty-seven".