133123401 has 12 divisors (see below), whose sum is σ = 192741120. Its totient is φ = 88540440.

The previous prime is 133123391. The next prime is 133123421. The reversal of 133123401 is 104321331.

133123401 is a `hidden beast` number, since 13 + 312 + 340 + 1 = 666.

It is not a de Polignac number, because 133123401 - 2⁶ = 133123337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133123421) 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, 13281 + ... + 21038.

It is an arithmetic number, because the mean of its divisors is an integer number (16061760).

Almost surely, 2^133123401 is an apocalyptic number.

It is an amenable number.

133123401 is a deficient number, since it is larger than the sum of its proper divisors (59617719).

133123401 is a wasteful number, since it uses less digits than its factorization.

133123401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34756 (or 34753 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 133123401 is about 11537.9114661190. The cubic root of 133123401 is about 510.6046922085.

Adding to 133123401 its reverse (104321331), we get a palindrome (237444732).

The spelling of 133123401 in words is "one hundred thirty-three million, one hundred twenty-three thousand, four hundred one".