85042990 has 8 divisors (see below), whose sum is σ = 153077400. Its totient is φ = 34017192.

The previous prime is 85042987. The next prime is 85043003. The reversal of 85042990 is 9924058.

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

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, 4252140 + ... + 4252159.

It is an arithmetic number, because the mean of its divisors is an integer number (19134675).

Almost surely, 2^85042990 is an apocalyptic number.

85042990 is a deficient number, since it is larger than the sum of its proper divisors (68034410).

85042990 is a wasteful number, since it uses less digits than its factorization.

85042990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8504306.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 85042990 is about 9221.8756226703. The cubic root of 85042990 is about 439.7570800982.

The spelling of 85042990 in words is "eighty-five million, forty-two thousand, nine hundred ninety".