216004242 has 8 divisors (see below), whose sum is σ = 432008496. Its totient is φ = 72001412.

The previous prime is 216004237. The next prime is 216004259. The reversal of 216004242 is 242400612.

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

216004242 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18000348 + ... + 18000359.

It is an arithmetic number, because the mean of its divisors is an integer number (54001062).

Almost surely, 2^216004242 is an apocalyptic number.

216004242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216004242 is a wasteful number, since it uses less digits than its factorization.

216004242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36000712.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 216004242 is about 14697.0827717612. The cubic root of 216004242 is about 600.0039277521.

Adding to 216004242 its reverse (242400612), we get a palindrome (458404854).

The spelling of 216004242 in words is "two hundred sixteen million, four thousand, two hundred forty-two".