242767251 has 24 divisors (see below), whose sum is σ = 358154160. Its totient is φ = 158414400.

The previous prime is 242767243. The next prime is 242767309. The reversal of 242767251 is 152767242.

It is a happy number.

It is not a de Polignac number, because 242767251 - 2³ = 242767243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242767211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124756 + ... + 126686.

It is an arithmetic number, because the mean of its divisors is an integer number (14923090).

Almost surely, 2^242767251 is an apocalyptic number.

242767251 is a deficient number, since it is larger than the sum of its proper divisors (115386909).

242767251 is a wasteful number, since it uses less digits than its factorization.

242767251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227 (or 2224 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 242767251 is about 15580.9900519832. The cubic root of 242767251 is about 623.8258497619.

Subtracting from 242767251 its reverse (152767242), we obtain a palindrome (90000009).

The spelling of 242767251 in words is "two hundred forty-two million, seven hundred sixty-seven thousand, two hundred fifty-one".