133443241 has 4 divisors (see below), whose sum is σ = 135961092. Its totient is φ = 130925392.

The previous prime is 133443227. The next prime is 133443253. The reversal of 133443241 is 142344331.

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 121088016 + 12355225 = 11004^2 + 3515^2 .

It is a cyclic number.

It is not a de Polignac number, because 133443241 - 2¹⁹ = 132918953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133443221) 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, 1258846 + ... + 1258951.

It is an arithmetic number, because the mean of its divisors is an integer number (33990273).

Almost surely, 2^133443241 is an apocalyptic number.

It is an amenable number.

133443241 is a deficient number, since it is larger than the sum of its proper divisors (2517851).

133443241 is an equidigital number, since it uses as much as digits as its factorization.

133443241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517850.

The product of its digits is 3456, while the sum is 25.

The square root of 133443241 is about 11551.7635450177. The cubic root of 133443241 is about 511.0132885129.

Adding to 133443241 its reverse (142344331), we get a palindrome (275787572).

The spelling of 133443241 in words is "one hundred thirty-three million, four hundred forty-three thousand, two hundred forty-one".