11543121142 has 32 divisors (see below), whose sum is σ = 21039989760. Its totient is φ = 4636544640.

The previous prime is 11543121137. The next prime is 11543121203. The reversal of 11543121142 is 24112134511.

It is a happy number.

11543121142 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44584 + ... + 158347.

It is an arithmetic number, because the mean of its divisors is an integer number (657499680).

Almost surely, 2^11543121142 is an apocalyptic number.

11543121142 is a deficient number, since it is larger than the sum of its proper divisors (9496868618).

11543121142 is a wasteful number, since it uses less digits than its factorization.

11543121142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203196.

The product of its digits is 960, while the sum is 25.

Adding to 11543121142 its reverse (24112134511), we get a palindrome (35655255653).

The spelling of 11543121142 in words is "eleven billion, five hundred forty-three million, one hundred twenty-one thousand, one hundred forty-two".