242102111 has 4 divisors (see below), whose sum is σ = 242195424. Its totient is φ = 242008800.

The previous prime is 242102099. The next prime is 242102129. The reversal of 242102111 is 111201242.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242102111 is a prime.

It is a super-2 number, since 2×242102111² = 117226864301312642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242102131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42650 + ... + 47991.

It is an arithmetic number, because the mean of its divisors is an integer number (60548856).

Almost surely, 2^242102111 is an apocalyptic number.

242102111 is a deficient number, since it is larger than the sum of its proper divisors (93313).

242102111 is an equidigital number, since it uses as much as digits as its factorization.

242102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93312.

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

The square root of 242102111 is about 15559.6308118156. The cubic root of 242102111 is about 623.2556039145.

Adding to 242102111 its reverse (111201242), we get a palindrome (353303353).

The spelling of 242102111 in words is "two hundred forty-two million, one hundred two thousand, one hundred eleven".