85531942 has 4 divisors (see below), whose sum is σ = 128297916. Its totient is φ = 42765970.

The previous prime is 85531909. The next prime is 85531949. The reversal of 85531942 is 24913558.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85531949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21382984 + ... + 21382987.

It is an arithmetic number, because the mean of its divisors is an integer number (32074479).

Almost surely, 2^85531942 is an apocalyptic number.

85531942 is a deficient number, since it is larger than the sum of its proper divisors (42765974).

85531942 is a wasteful number, since it uses less digits than its factorization.

85531942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42765973.

The product of its digits is 43200, while the sum is 37.

The square root of 85531942 is about 9248.3480687094. The cubic root of 85531942 is about 440.5982598799.

The spelling of 85531942 in words is "eighty-five million, five hundred thirty-one thousand, nine hundred forty-two".