133443245 has 24 divisors (see below), whose sum is σ = 175680000. Its totient is φ = 97246656.

The previous prime is 133443227. The next prime is 133443253. The reversal of 133443245 is 542344331.

It is not a de Polignac number, because 133443245 - 2¹⁸ = 133181101 is a prime.

It is a super-3 number, since 3×133443245³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65756 + ... + 67754.

It is an arithmetic number, because the mean of its divisors is an integer number (7320000).

Almost surely, 2^133443245 is an apocalyptic number.

It is an amenable number.

133443245 is a deficient number, since it is larger than the sum of its proper divisors (42236755).

133443245 is a wasteful number, since it uses less digits than its factorization.

133443245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109 (or 2096 counting only the distinct ones).

The product of its digits is 17280, while the sum is 29.

The square root of 133443245 is about 11551.7637181514. The cubic root of 133443245 is about 511.0132936188.

Adding to 133443245 its reverse (542344331), we get a palindrome (675787576).

The spelling of 133443245 in words is "one hundred thirty-three million, four hundred forty-three thousand, two hundred forty-five".