242188742 has 8 divisors (see below), whose sum is σ = 368259816. Its totient is φ = 119435472.

The previous prime is 242188721. The next prime is 242188753. The reversal of 242188742 is 247881242.

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

It is a junction number, because it is equal to n+sod(n) for n = 242188696 and 242188705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829268 + ... + 829559.

It is an arithmetic number, because the mean of its divisors is an integer number (46032477).

Almost surely, 2^242188742 is an apocalyptic number.

242188742 is a deficient number, since it is larger than the sum of its proper divisors (126071074).

242188742 is a wasteful number, since it uses less digits than its factorization.

242188742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658902.

The product of its digits is 57344, while the sum is 38.

The square root of 242188742 is about 15562.4144013710. The cubic root of 242188742 is about 623.3299345584.

The spelling of 242188742 in words is "two hundred forty-two million, one hundred eighty-eight thousand, seven hundred forty-two".