133143441 has 8 divisors (see below), whose sum is σ = 181854624. Its totient is φ = 86597280.

The previous prime is 133143421. The next prime is 133143443. The reversal of 133143441 is 144341331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133143441 - 2¹⁰ = 133142417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133143443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541111 + ... + 541356.

It is an arithmetic number, because the mean of its divisors is an integer number (22731828).

Almost surely, 2^133143441 is an apocalyptic number.

It is an amenable number.

133143441 is a deficient number, since it is larger than the sum of its proper divisors (48711183).

133143441 is a wasteful number, since it uses less digits than its factorization.

133143441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082511.

The product of its digits is 1728, while the sum is 24.

The square root of 133143441 is about 11538.7798748395. The cubic root of 133143441 is about 510.6303125591.

Adding to 133143441 its reverse (144341331), we get a palindrome (277484772).

The spelling of 133143441 in words is "one hundred thirty-three million, one hundred forty-three thousand, four hundred forty-one".