133043405 has 16 divisors (see below), whose sum is σ = 174451968. Its totient is φ = 96600000.

The previous prime is 133043381. The next prime is 133043423. The reversal of 133043405 is 504340331.

It is not a de Polignac number, because 133043405 - 2¹⁰ = 133042381 is a prime.

It is a super-2 number, since 2×133043405² = 35401095227988050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39695 + ... + 42915.

It is an arithmetic number, because the mean of its divisors is an integer number (10903248).

Almost surely, 2^133043405 is an apocalyptic number.

It is an amenable number.

133043405 is a deficient number, since it is larger than the sum of its proper divisors (41408563).

133043405 is a wasteful number, since it uses less digits than its factorization.

133043405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 133043405 is about 11534.4442865705. Note that the first 3 decimals coincide. The cubic root of 133043405 is about 510.5023948485.

Adding to 133043405 its reverse (504340331), we get a palindrome (637383736).

The spelling of 133043405 in words is "one hundred thirty-three million, forty-three thousand, four hundred five".