11503055142 has 12 divisors (see below), whose sum is σ = 24923286180. Its totient is φ = 3834351708.

The previous prime is 11503055129. The next prime is 11503055149. The reversal of 11503055142 is 24155030511.

11503055142 is a `hidden beast` number, since 11 + 503 + 0 + 5 + 5 + 142 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11503055149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 319529292 + ... + 319529327.

It is an arithmetic number, because the mean of its divisors is an integer number (2076940515).

Almost surely, 2^11503055142 is an apocalyptic number.

11503055142 is an abundant number, since it is smaller than the sum of its proper divisors (13420231038).

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

11503055142 is a wasteful number, since it uses less digits than its factorization.

11503055142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639058627 (or 639058624 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 11503055142 its reverse (24155030511), we get a palindrome (35658085653).

The spelling of 11503055142 in words is "eleven billion, five hundred three million, fifty-five thousand, one hundred forty-two".