133445123 has 8 divisors (see below), whose sum is σ = 153710592. Its totient is φ = 113480136.

The previous prime is 133445099. The next prime is 133445129. The reversal of 133445123 is 321544331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133445123 - 2¹⁰ = 133444099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133445092 and 133445101.

It is not an unprimeable number, because it can be changed into a prime (133445129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74165 + ... + 75942.

It is an arithmetic number, because the mean of its divisors is an integer number (19213824).

Almost surely, 2^133445123 is an apocalyptic number.

133445123 is a deficient number, since it is larger than the sum of its proper divisors (20265469).

133445123 is a wasteful number, since it uses less digits than its factorization.

133445123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150241.

The product of its digits is 4320, while the sum is 26.

The square root of 133445123 is about 11551.8450041541. The cubic root of 133445123 is about 511.0156908388.

Adding to 133445123 its reverse (321544331), we get a palindrome (454989454).

The spelling of 133445123 in words is "one hundred thirty-three million, four hundred forty-five thousand, one hundred twenty-three".