133126723 has 4 divisors (see below), whose sum is σ = 133173040. Its totient is φ = 133080408.

The previous prime is 133126717. The next prime is 133126729. The reversal of 133126723 is 327621331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327621331 = 17 ⋅19271843.

It is an interprime number because it is at equal distance from previous prime (133126717) and next prime (133126729).

It is a cyclic number.

It is not a de Polignac number, because 133126723 - 2²¹ = 131029571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133126691 and 133126700.

It is not an unprimeable number, because it can be changed into a prime (133126729) 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 3 ways as a sum of consecutive naturals, for example, 18540 + ... + 24697.

It is an arithmetic number, because the mean of its divisors is an integer number (33293260).

Almost surely, 2^133126723 is an apocalyptic number.

133126723 is a deficient number, since it is larger than the sum of its proper divisors (46317).

133126723 is an equidigital number, since it uses as much as digits as its factorization.

133126723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46316.

The product of its digits is 4536, while the sum is 28.

The square root of 133126723 is about 11538.0554254172. The cubic root of 133126723 is about 510.6089394324.

The spelling of 133126723 in words is "one hundred thirty-three million, one hundred twenty-six thousand, seven hundred twenty-three".