87210143 has 4 divisors (see below), whose sum is σ = 87231720. Its totient is φ = 87188568.

The previous prime is 87210113. The next prime is 87210169. The reversal of 87210143 is 34101278.

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

It is a cyclic number.

It is not a de Polignac number, because 87210143 - 2¹² = 87206047 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87210113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2708 + ... + 13481.

It is an arithmetic number, because the mean of its divisors is an integer number (21807930).

Almost surely, 2^87210143 is an apocalyptic number.

87210143 is a deficient number, since it is larger than the sum of its proper divisors (21577).

87210143 is a wasteful number, since it uses less digits than its factorization.

87210143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21576.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 87210143 is about 9338.6371061306. The cubic root of 87210143 is about 443.4612391542.

The spelling of 87210143 in words is "eighty-seven million, two hundred ten thousand, one hundred forty-three".