216412242 has 16 divisors (see below), whose sum is σ = 455604960. Its totient is φ = 68340672.

The previous prime is 216412241. The next prime is 216412277. The reversal of 216412242 is 242214612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (216412241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949063 + ... + 949290.

It is an arithmetic number, because the mean of its divisors is an integer number (28475310).

Almost surely, 2^216412242 is an apocalyptic number.

216412242 is an abundant number, since it is smaller than the sum of its proper divisors (239192718).

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

216412242 is a wasteful number, since it uses less digits than its factorization.

216412242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898377.

The product of its digits is 1536, while the sum is 24.

The square root of 216412242 is about 14710.9565290636. The cubic root of 216412242 is about 600.3814629808.

Adding to 216412242 its reverse (242214612), we get a palindrome (458626854).

The spelling of 216412242 in words is "two hundred sixteen million, four hundred twelve thousand, two hundred forty-two".