210111242 has 16 divisors (see below), whose sum is σ = 354910464. Its totient is φ = 92424000.

The previous prime is 210111241. The next prime is 210111257. The reversal of 210111242 is 242111012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (210111241) 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, 153359 + ... + 154722.

It is an arithmetic number, because the mean of its divisors is an integer number (22181904).

Almost surely, 2^210111242 is an apocalyptic number.

210111242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210111242 is a deficient number, since it is larger than the sum of its proper divisors (144799222).

210111242 is a wasteful number, since it uses less digits than its factorization.

210111242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308125.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 210111242 is about 14495.2144516734. The cubic root of 210111242 is about 594.4971313155.

Adding to 210111242 its reverse (242111012), we get a palindrome (452222254).

The spelling of 210111242 in words is "two hundred ten million, one hundred eleven thousand, two hundred forty-two".