213816242 has 16 divisors (see below), whose sum is σ = 339891552. Its totient is φ = 100530240.

The previous prime is 213816241. The next prime is 213816277. The reversal of 213816242 is 242618312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (213816241) 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, 51413 + ... + 55415.

It is an arithmetic number, because the mean of its divisors is an integer number (21243222).

Almost surely, 2^213816242 is an apocalyptic number.

213816242 is a deficient number, since it is larger than the sum of its proper divisors (126075310).

213816242 is a wasteful number, since it uses less digits than its factorization.

213816242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5593.

The product of its digits is 4608, while the sum is 29.

The square root of 213816242 is about 14622.4567703242. The cubic root of 213816242 is about 597.9711491918.

The spelling of 213816242 in words is "two hundred thirteen million, eight hundred sixteen thousand, two hundred forty-two".