1230111520242 has 128 divisors (see below), whose sum is σ = 2790873169920. Its totient is φ = 358085448000.

The previous prime is 1230111520237. The next prime is 1230111520243. The reversal of 1230111520242 is 2420251110321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1230111520243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 231090993 + ... + 231096315.

It is an arithmetic number, because the mean of its divisors is an integer number (21803696640).

Almost surely, 2^{1230111520242} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230111520242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395436584960).

1230111520242 is an abundant number, since it is smaller than the sum of its proper divisors (1560761649678).

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

1230111520242 is a wasteful number, since it uses less digits than its factorization.

1230111520242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6180.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 1230111520242 its reverse (2420251110321), we get a palindrome (3650362630563).

The spelling of 1230111520242 in words is "one trillion, two hundred thirty billion, one hundred eleven million, five hundred twenty thousand, two hundred forty-two".