242542005 has 8 divisors (see below), whose sum is σ = 388067232. Its totient is φ = 129355728.

The previous prime is 242541997. The next prime is 242542093. The reversal of 242542005 is 500245242.

It is a happy number.

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

It is not a de Polignac number, because 242542005 - 2³ = 242541997 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 8084719 + ... + 8084748.

It is an arithmetic number, because the mean of its divisors is an integer number (48508404).

Almost surely, 2^242542005 is an apocalyptic number.

It is an amenable number.

242542005 is a deficient number, since it is larger than the sum of its proper divisors (145525227).

242542005 is a wasteful number, since it uses less digits than its factorization.

242542005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16169475.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 242542005 is about 15573.7601432666. The cubic root of 242542005 is about 623.6328559145.

Adding to 242542005 its reverse (500245242), we get a palindrome (742787247).

The spelling of 242542005 in words is "two hundred forty-two million, five hundred forty-two thousand, five".