133541442 has 24 divisors (see below), whose sum is σ = 293005440. Its totient is φ = 43949880.

The previous prime is 133541417. The next prime is 133541449. The reversal of 133541442 is 244145331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133541449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45534 + ... + 48377.

It is an arithmetic number, because the mean of its divisors is an integer number (12208560).

Almost surely, 2^133541442 is an apocalyptic number.

133541442 is an abundant number, since it is smaller than the sum of its proper divisors (159463998).

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

133541442 is a wasteful number, since it uses less digits than its factorization.

133541442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93998 (or 93995 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 133541442 is about 11556.0132398678. The cubic root of 133541442 is about 511.1386094881.

Adding to 133541442 its reverse (244145331), we get a palindrome (377686773).

The spelling of 133541442 in words is "one hundred thirty-three million, five hundred forty-one thousand, four hundred forty-two".