242642758 has 4 divisors (see below), whose sum is σ = 363964140. Its totient is φ = 121321378.

The previous prime is 242642693. The next prime is 242642759. The reversal of 242642758 is 857246242.

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

It is a self number, because there is not a number n which added to its sum of digits gives 242642758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242642759) 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 as a sum of consecutive naturals, namely, 60660688 + ... + 60660691.

It is an arithmetic number, because the mean of its divisors is an integer number (90991035).

Almost surely, 2^242642758 is an apocalyptic number.

242642758 is a deficient number, since it is larger than the sum of its proper divisors (121321382).

242642758 is a wasteful number, since it uses less digits than its factorization.

242642758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121321381.

The product of its digits is 215040, while the sum is 40.

The square root of 242642758 is about 15576.9945111372. The cubic root of 242642758 is about 623.7191972237.

The spelling of 242642758 in words is "two hundred forty-two million, six hundred forty-two thousand, seven hundred fifty-eight".