133530041 has 4 divisors (see below), whose sum is σ = 133634292. Its totient is φ = 133425792.

The previous prime is 133530031. The next prime is 133530049. The reversal of 133530041 is 140035331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107723641 + 25806400 = 10379^2 + 5080^2 .

It is a cyclic number.

It is not a de Polignac number, because 133530041 - 2¹⁴ = 133513657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133529995 and 133530022.

It is not an unprimeable number, because it can be changed into a prime (133530049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50180 + ... + 52773.

It is an arithmetic number, because the mean of its divisors is an integer number (33408573).

Almost surely, 2^133530041 is an apocalyptic number.

It is an amenable number.

133530041 is a deficient number, since it is larger than the sum of its proper divisors (104251).

133530041 is a wasteful number, since it uses less digits than its factorization.

133530041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104250.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 133530041 is about 11555.5199363767. The cubic root of 133530041 is about 511.1240630496.

Adding to 133530041 its reverse (140035331), we get a palindrome (273565372).

The spelling of 133530041 in words is "one hundred thirty-three million, five hundred thirty thousand, forty-one".