216219142 has 8 divisors (see below), whose sum is σ = 325033632. Its totient is φ = 107874600.

The previous prime is 216219127. The next prime is 216219149. The reversal of 216219142 is 241912612.

216219142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 216219142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216219149) 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, 116334 + ... + 118177.

It is an arithmetic number, because the mean of its divisors is an integer number (40629204).

Almost surely, 2^216219142 is an apocalyptic number.

216219142 is a deficient number, since it is larger than the sum of its proper divisors (108814490).

216219142 is a wasteful number, since it uses less digits than its factorization.

216219142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234974.

The product of its digits is 1728, while the sum is 28.

The square root of 216219142 is about 14704.3919289442. The cubic root of 216219142 is about 600.2028406776.

The spelling of 216219142 in words is "two hundred sixteen million, two hundred nineteen thousand, one hundred forty-two".