11540142 has 24 divisors (see below), whose sum is σ = 25067016. Its totient is φ = 3836976.

The previous prime is 11540141. The next prime is 11540143. The reversal of 11540142 is 24104511.

It is an interprime number because it is at equal distance from previous prime (11540141) and next prime (11540143).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11540141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11713 + ... + 12659.

It is an arithmetic number, because the mean of its divisors is an integer number (1044459).

Almost surely, 2^11540142 is an apocalyptic number.

11540142 is an abundant number, since it is smaller than the sum of its proper divisors (13526874).

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

11540142 is a wasteful number, since it uses less digits than its factorization.

11540142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632 (or 1629 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 11540142 is about 3397.0784506690. The cubic root of 11540142 is about 225.9801977063.

Adding to 11540142 its reverse (24104511), we get a palindrome (35644653).

The spelling of 11540142 in words is "eleven million, five hundred forty thousand, one hundred forty-two".