242438751 has 20 divisors (see below), whose sum is σ = 383467392. Its totient is φ = 152117568.

The previous prime is 242438731. The next prime is 242438797. The reversal of 242438751 is 157834242.

It is a happy number.

It is not a de Polignac number, because 242438751 - 2⁵ = 242438719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242438701) 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 19 ways as a sum of consecutive naturals, for example, 86655 + ... + 89408.

Almost surely, 2^242438751 is an apocalyptic number.

242438751 is a deficient number, since it is larger than the sum of its proper divisors (141028641).

242438751 is a wasteful number, since it uses less digits than its factorization.

242438751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176092 (or 176083 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 242438751 is about 15570.4447913346. Note that the first 3 decimals coincide. The cubic root of 242438751 is about 623.5443465355.

The spelling of 242438751 in words is "two hundred forty-two million, four hundred thirty-eight thousand, seven hundred fifty-one".