133770123 has 30 divisors (see below), whose sum is σ = 204111996. Its totient is φ = 87289488.

The previous prime is 133770113. The next prime is 133770137. The reversal of 133770123 is 321077331.

It is not a de Polignac number, because 133770123 - 2⁹ = 133769611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (133770103) 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 29 ways as a sum of consecutive naturals, for example, 851961 + ... + 852117.

Almost surely, 2^133770123 is an apocalyptic number.

133770123 is a deficient number, since it is larger than the sum of its proper divisors (70341873).

133770123 is an frugal number, since it uses more digits than its factorization.

133770123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 133770123 is about 11565.9034666558. The cubic root of 133770123 is about 511.4302069357.

The spelling of 133770123 in words is "one hundred thirty-three million, seven hundred seventy thousand, one hundred twenty-three".