133542442 has 16 divisors (see below), whose sum is σ = 219996000. Its totient is φ = 60292240.

The previous prime is 133542403. The next prime is 133542499. The reversal of 133542442 is 244245331.

It is a happy number.

133542442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 133542442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17092 + ... + 23647.

It is an arithmetic number, because the mean of its divisors is an integer number (13749750).

Almost surely, 2^133542442 is an apocalyptic number.

133542442 is a deficient number, since it is larger than the sum of its proper divisors (86453558).

133542442 is a wasteful number, since it uses less digits than its factorization.

133542442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40901.

The product of its digits is 11520, while the sum is 28.

The square root of 133542442 is about 11556.0565073039. The cubic root of 133542442 is about 511.1398853401.

Adding to 133542442 its reverse (244245331), we get a palindrome (377787773).

The spelling of 133542442 in words is "one hundred thirty-three million, five hundred forty-two thousand, four hundred forty-two".