133121743 has 8 divisors (see below), whose sum is σ = 135835056. Its totient is φ = 130416000.

The previous prime is 133121741. The next prime is 133121753. The reversal of 133121743 is 347121331.

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 133121743 - 2¹ = 133121741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133121741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45268 + ... + 48118.

It is an arithmetic number, because the mean of its divisors is an integer number (16979382).

Almost surely, 2^133121743 is an apocalyptic number.

133121743 is a deficient number, since it is larger than the sum of its proper divisors (2713313).

133121743 is an equidigital number, since it uses as much as digits as its factorization.

133121743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785.

The product of its digits is 1512, while the sum is 25.

The square root of 133121743 is about 11537.8396158033. The cubic root of 133121743 is about 510.6025724057.

The spelling of 133121743 in words is "one hundred thirty-three million, one hundred twenty-one thousand, seven hundred forty-three".