242388478 has 8 divisors (see below), whose sum is σ = 366198840. Its totient is φ = 120322200.

The previous prime is 242388439. The next prime is 242388479. The reversal of 242388478 is 874883242.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242388479) 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, 435673 + ... + 436228.

It is an arithmetic number, because the mean of its divisors is an integer number (45774855).

Almost surely, 2^242388478 is an apocalyptic number.

242388478 is a deficient number, since it is larger than the sum of its proper divisors (123810362).

242388478 is a wasteful number, since it uses less digits than its factorization.

242388478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872042.

The product of its digits is 688128, while the sum is 46.

The square root of 242388478 is about 15568.8303349995. The cubic root of 242388478 is about 623.5012433987.

The spelling of 242388478 in words is "two hundred forty-two million, three hundred eighty-eight thousand, four hundred seventy-eight".