242121412 has 48 divisors (see below), whose sum is σ = 489404160. Its totient is φ = 103813632.

The previous prime is 242121401. The next prime is 242121413. The reversal of 242121412 is 214121242.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 242121412.

It is not an unprimeable number, because it can be changed into a prime (242121413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68103 + ... + 71569.

It is an arithmetic number, because the mean of its divisors is an integer number (10195920).

Almost surely, 2^242121412 is an apocalyptic number.

It is an amenable number.

242121412 is an abundant number, since it is smaller than the sum of its proper divisors (247282748).

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

242121412 is a wasteful number, since it uses less digits than its factorization.

242121412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580 (or 3578 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The square root of 242121412 is about 15560.2510262528. The cubic root of 242121412 is about 623.2721659851.

Adding to 242121412 its reverse (214121242), we get a palindrome (456242654).

The spelling of 242121412 in words is "two hundred forty-two million, one hundred twenty-one thousand, four hundred twelve".