242012123220 has 48 divisors (see below), whose sum is σ = 774438795648. Its totient is φ = 55317056640.

The previous prime is 242012123219. The next prime is 242012123251. The reversal of 242012123220 is 22321210242.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 15 ways as a sum of consecutive naturals, for example, 288109251 + ... + 288110090.

It is an arithmetic number, because the mean of its divisors is an integer number (16134141576).

Almost surely, 2^242012123220 is an apocalyptic number.

242012123220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242012123220 is an abundant number, since it is smaller than the sum of its proper divisors (532426672428).

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

242012123220 is a wasteful number, since it uses less digits than its factorization.

242012123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576219360 (or 576219358 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 242012123220 its reverse (22321210242), we get a palindrome (264333333462).

The spelling of 242012123220 in words is "two hundred forty-two billion, twelve million, one hundred twenty-three thousand, two hundred twenty".