242742620 has 12 divisors (see below), whose sum is σ = 509759544. Its totient is φ = 97097040.

The previous prime is 242742601. The next prime is 242742623. The reversal of 242742620 is 26247242.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242742623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6068546 + ... + 6068585.

It is an arithmetic number, because the mean of its divisors is an integer number (42479962).

Almost surely, 2^242742620 is an apocalyptic number.

242742620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242742620 is an abundant number, since it is smaller than the sum of its proper divisors (267016924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242742620 is a wasteful number, since it uses less digits than its factorization.

242742620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12137140 (or 12137138 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 242742620 is about 15580.1996136121. The cubic root of 242742620 is about 623.8047513997.

Adding to 242742620 its reverse (26247242), we get a palindrome (268989862).

The spelling of 242742620 in words is "two hundred forty-two million, seven hundred forty-two thousand, six hundred twenty".