242738 has 4 divisors (see below), whose sum is σ = 364110. Its totient is φ = 121368.

The previous prime is 242731. The next prime is 242747. The reversal of 242738 is 837242.

242738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 218089 + 24649 = 467^2 + 157^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 2³ + 4⁸ + 7 + 2⁵ + 3¹¹ + 8 .

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 242738.

It is not an unprimeable number, because it can be changed into a prime (242731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60683 + ... + 60686.

2²⁴²⁷³⁸ is an apocalyptic number.

242738 is a deficient number, since it is larger than the sum of its proper divisors (121372).

242738 is a wasteful number, since it uses less digits than its factorization.

242738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121371.

The product of its digits is 2688, while the sum is 26.

The square root of 242738 is about 492.6844832142. The cubic root of 242738 is about 62.3800793852.

The spelling of 242738 in words is "two hundred forty-two thousand, seven hundred thirty-eight".