242158738 has 8 divisors (see below), whose sum is σ = 363596940. Its totient is φ = 120959760.

The previous prime is 242158733. The next prime is 242158753. The reversal of 242158738 is 837851242.

It is a happy number.

242158738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 214417449 + 27741289 = 14643^2 + 5267^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 242158738.

It is not an unprimeable number, because it can be changed into a prime (242158733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57253 + ... + 61336.

Almost surely, 2^242158738 is an apocalyptic number.

242158738 is a deficient number, since it is larger than the sum of its proper divisors (121438202).

242158738 is a wasteful number, since it uses less digits than its factorization.

242158738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119612.

The product of its digits is 107520, while the sum is 40.

The square root of 242158738 is about 15561.4503822748. The cubic root of 242158738 is about 623.3041927017.

The spelling of 242158738 in words is "two hundred forty-two million, one hundred fifty-eight thousand, seven hundred thirty-eight".