216435142 has 32 divisors (see below), whose sum is σ = 406022400. Its totient is φ = 84062880.

The previous prime is 216435139. The next prime is 216435169. The reversal of 216435142 is 241534612.

216435142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 216435142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51733 + ... + 55759.

It is an arithmetic number, because the mean of its divisors is an integer number (12688200).

Almost surely, 2^216435142 is an apocalyptic number.

216435142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216435142 is a deficient number, since it is larger than the sum of its proper divisors (189587258).

216435142 is a wasteful number, since it uses less digits than its factorization.

216435142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396.

The product of its digits is 5760, while the sum is 28.

The square root of 216435142 is about 14711.7348399161. The cubic root of 216435142 is about 600.4026390019.

Adding to 216435142 its reverse (241534612), we get a palindrome (457969754).

The spelling of 216435142 in words is "two hundred sixteen million, four hundred thirty-five thousand, one hundred forty-two".