242042220 has 72 divisors (see below), whose sum is σ = 839084064. Its totient is φ = 55323648.

The previous prime is 242042219. The next prime is 242042221. The reversal of 242042220 is 22240242.

242042220 is a `hidden beast` number, since 242 + 0 + 422 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (242042219) and next prime (242042221).

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 = 242042193 and 242042202.

It is not an unprimeable number, because it can be changed into a prime (242042221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94789 + ... + 97308.

Almost surely, 2^242042220 is an apocalyptic number.

242042220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242042220 is an abundant number, since it is smaller than the sum of its proper divisors (597041844).

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

242042220 is a wasteful number, since it uses less digits than its factorization.

242042220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192119 (or 192114 counting only the distinct ones).

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

The square root of 242042220 is about 15557.7061291181. The cubic root of 242042220 is about 623.2042062080.

Adding to 242042220 its reverse (22240242), we get a palindrome (264282462).

The spelling of 242042220 in words is "two hundred forty-two million, forty-two thousand, two hundred twenty".