133220041 has 6 divisors (see below), whose sum is σ = 141517790. Its totient is φ = 125383296.

The previous prime is 133220027. The next prime is 133220047. The reversal of 133220041 is 140022331.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 63664441 + 69555600 = 7979^2 + 8340^2 .

It is a de Polignac number, because none of the positive numbers 2^k-133220041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133219997 and 133220024.

It is not an unprimeable number, because it can be changed into a prime (133220047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230196 + ... + 230773.

Almost surely, 2^133220041 is an apocalyptic number.

It is an amenable number.

133220041 is a deficient number, since it is larger than the sum of its proper divisors (8297749).

133220041 is an equidigital number, since it uses as much as digits as its factorization.

133220041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461003 (or 460986 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 133220041 is about 11542.0986393290. The cubic root of 133220041 is about 510.7282189548.

Adding to 133220041 its reverse (140022331), we get a palindrome (273242372).

The spelling of 133220041 in words is "one hundred thirty-three million, two hundred twenty thousand, forty-one".