12133542 has 32 divisors (see below), whose sum is σ = 25336800. Its totient is φ = 3868928.

The previous prime is 12133523. The next prime is 12133543. The reversal of 12133542 is 24533121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133543) 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 15 ways as a sum of consecutive naturals, for example, 23584 + ... + 24092.

It is an arithmetic number, because the mean of its divisors is an integer number (791775).

Almost surely, 2^12133542 is an apocalyptic number.

12133542 is an abundant number, since it is smaller than the sum of its proper divisors (13203258).

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

12133542 is a wasteful number, since it uses less digits than its factorization.

12133542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680.

The product of its digits is 720, while the sum is 21.

The square root of 12133542 is about 3483.3234130640. The cubic root of 12133542 is about 229.7889809979.

Adding to 12133542 its reverse (24533121), we get a palindrome (36666663).

The spelling of 12133542 in words is "twelve million, one hundred thirty-three thousand, five hundred forty-two".