133743903 has 12 divisors (see below), whose sum is σ = 181311624. Its totient is φ = 87693600.

The previous prime is 133743899. The next prime is 133743931. The reversal of 133743903 is 309347331.

It is not a de Polignac number, because 133743903 - 2² = 133743899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133741903) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5173 + ... + 17153.

It is an arithmetic number, because the mean of its divisors is an integer number (15109302).

Almost surely, 2^133743903 is an apocalyptic number.

133743903 is a deficient number, since it is larger than the sum of its proper divisors (47567721).

133743903 is an equidigital number, since it uses as much as digits as its factorization.

133743903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12106 (or 12045 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 33.

The square root of 133743903 is about 11564.7699069199. The cubic root of 133743903 is about 511.3967899665.

The spelling of 133743903 in words is "one hundred thirty-three million, seven hundred forty-three thousand, nine hundred three".