133212443 has 8 divisors (see below), whose sum is σ = 163953888. Its totient is φ = 105398784.

The previous prime is 133212419. The next prime is 133212449. The reversal of 133212443 is 344212331.

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

It is a cyclic number.

It is not a de Polignac number, because 133212443 - 2¹⁸ = 132950299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133212449) 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, 731846 + ... + 732027.

It is an arithmetic number, because the mean of its divisors is an integer number (20494236).

Almost surely, 2^133212443 is an apocalyptic number.

133212443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

133212443 is a deficient number, since it is larger than the sum of its proper divisors (30741445).

133212443 is a wasteful number, since it uses less digits than its factorization.

133212443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463893.

The product of its digits is 1728, while the sum is 23.

The square root of 133212443 is about 11541.7694917201. The cubic root of 133212443 is about 510.7185092376.

Adding to 133212443 its reverse (344212331), we get a palindrome (477424774).

The spelling of 133212443 in words is "one hundred thirty-three million, two hundred twelve thousand, four hundred forty-three".