215042 has 8 divisors (see below), whose sum is σ = 339600. Its totient is φ = 101844.

The previous prime is 214993. The next prime is 215051. The reversal of 215042 is 240512.

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

It is an unprimeable number.

215042 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2792 + ... + 2867.

It is an arithmetic number, because the mean of its divisors is an integer number (42450).

215042 is a Friedman number, since it can be written as 210*4^5+2, using all its digits and the basic arithmetic operations.

2²¹⁵⁰⁴² is an apocalyptic number.

215042 is a deficient number, since it is larger than the sum of its proper divisors (124558).

215042 is a wasteful number, since it uses less digits than its factorization.

215042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 215042 is about 463.7262123279. The cubic root of 215042 is about 59.9111648331.

Adding to 215042 its reverse (240512), we get a palindrome (455554).

The spelling of 215042 in words is "two hundred fifteen thousand, forty-two".