87285742 has 8 divisors (see below), whose sum is σ = 130987800. Its totient is φ = 43623144.

The previous prime is 87285733. The next prime is 87285749. The reversal of 87285742 is 24758278.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87285749) 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, 3517 + ... + 13672.

It is an arithmetic number, because the mean of its divisors is an integer number (16373475).

Almost surely, 2^87285742 is an apocalyptic number.

87285742 is a deficient number, since it is larger than the sum of its proper divisors (43702058).

87285742 is a wasteful number, since it uses less digits than its factorization.

87285742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19730.

The product of its digits is 250880, while the sum is 43.

The square root of 87285742 is about 9342.6838756323. The cubic root of 87285742 is about 443.5893417751.

The spelling of 87285742 in words is "eighty-seven million, two hundred eighty-five thousand, seven hundred forty-two".