242220042 has 24 divisors (see below), whose sum is σ = 525286944. Its totient is φ = 80666664.

The previous prime is 242220031. The next prime is 242220067. The reversal of 242220042 is 240022242.

242220042 is a `hidden beast` number, since 2 + 422 + 200 + 42 = 666.

242220042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 242219997 and 242220024.

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 11 ways as a sum of consecutive naturals, for example, 16513 + ... + 27515.

It is an arithmetic number, because the mean of its divisors is an integer number (21886956).

Almost surely, 2^242220042 is an apocalyptic number.

242220042 is an abundant number, since it is smaller than the sum of its proper divisors (283066902).

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

242220042 is a wasteful number, since it uses less digits than its factorization.

242220042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12234 (or 12231 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 242220042 is about 15563.4199969030. The cubic root of 242220042 is about 623.3567860495.

Adding to 242220042 its reverse (240022242), we get a palindrome (482242284).

It can be divided in two parts, 2422200 and 42, that added together give a palindrome (2422242).

The spelling of 242220042 in words is "two hundred forty-two million, two hundred twenty thousand, forty-two".