242343251 has 4 divisors (see below), whose sum is σ = 248254104. Its totient is φ = 236432400.

The previous prime is 242343247. The next prime is 242343259. The reversal of 242343251 is 152343242.

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

It is a cyclic number.

It is not a de Polignac number, because 242343251 - 2² = 242343247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242343251.

It is not an unprimeable number, because it can be changed into a prime (242343259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2955365 + ... + 2955446.

It is an arithmetic number, because the mean of its divisors is an integer number (62063526).

Almost surely, 2^242343251 is an apocalyptic number.

242343251 is a deficient number, since it is larger than the sum of its proper divisors (5910853).

242343251 is an equidigital number, since it uses as much as digits as its factorization.

242343251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5910852.

The product of its digits is 5760, while the sum is 26.

The square root of 242343251 is about 15567.3777817589. The cubic root of 242343251 is about 623.4624615157.

Adding to 242343251 its reverse (152343242), we get a palindrome (394686493).

Subtracting from 242343251 its reverse (152343242), we obtain a palindrome (90000009).

The spelling of 242343251 in words is "two hundred forty-two million, three hundred forty-three thousand, two hundred fifty-one".