242153111 has 4 divisors (see below), whose sum is σ = 242185224. Its totient is φ = 242121000.

The previous prime is 242153101. The next prime is 242153137. The reversal of 242153111 is 111351242.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 242153111 - 2²² = 237958807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242153101) 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, 2096 + ... + 22106.

It is an arithmetic number, because the mean of its divisors is an integer number (60546306).

Almost surely, 2^242153111 is an apocalyptic number.

242153111 is a deficient number, since it is larger than the sum of its proper divisors (32113).

242153111 is a wasteful number, since it uses less digits than its factorization.

242153111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32112.

The product of its digits is 240, while the sum is 20.

The square root of 242153111 is about 15561.2695818818. The cubic root of 242153111 is about 623.2993647943.

The spelling of 242153111 in words is "two hundred forty-two million, one hundred fifty-three thousand, one hundred eleven".