242121230530 has 16 divisors (see below), whose sum is σ = 443204965440. Its totient is φ = 95206992112.

The previous prime is 242121230447. The next prime is 242121230531. The reversal of 242121230530 is 35032121242.

It is a super-2 number, since 2×242121230530² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242121230495 and 242121230504.

It is not an unprimeable number, because it can be changed into a prime (242121230531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205186894 + ... + 205188073.

It is an arithmetic number, because the mean of its divisors is an integer number (27700310340).

Almost surely, 2^242121230530 is an apocalyptic number.

242121230530 is a deficient number, since it is larger than the sum of its proper divisors (201083734910).

242121230530 is a wasteful number, since it uses less digits than its factorization.

242121230530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410375033.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 242121230530 its reverse (35032121242), we get a palindrome (277153351772).

The spelling of 242121230530 in words is "two hundred forty-two billion, one hundred twenty-one million, two hundred thirty thousand, five hundred thirty".