111241312042 has 20 divisors (see below), whose sum is σ = 194660721666. Its totient is φ = 47674845960.

The previous prime is 111241312037. The next prime is 111241312057. The reversal of 111241312042 is 240213142111.

It can be written as a sum of positive squares in only one way, i.e., 110402688361 + 838623681 = 332269^2 + 28959^2 .

It is a super-2 number, since 2×111241312042² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11578009 + ... + 11587612.

Almost surely, 2^111241312042 is an apocalyptic number.

111241312042 is a deficient number, since it is larger than the sum of its proper divisors (83419409624).

111241312042 is an frugal number, since it uses more digits than its factorization.

111241312042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23165651 (or 23165630 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 111241312042 its reverse (240213142111), we get a palindrome (351454454153).

The spelling of 111241312042 in words is "one hundred eleven billion, two hundred forty-one million, three hundred twelve thousand, forty-two".