133374021 has 16 divisors (see below), whose sum is σ = 195421248. Its totient is φ = 80240000.

The previous prime is 133373969. The next prime is 133374029. The reversal of 133374021 is 120473331.

It is a cyclic number.

It is not a de Polignac number, because 133374021 - 2⁶ = 133373957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133373982 and 133374000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133374029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10230 + ... + 19271.

It is an arithmetic number, because the mean of its divisors is an integer number (12213828).

Almost surely, 2^133374021 is an apocalyptic number.

133374021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133374021 is a deficient number, since it is larger than the sum of its proper divisors (62047227).

133374021 is a wasteful number, since it uses less digits than its factorization.

133374021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29652.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 133374021 is about 11548.7670770520. The cubic root of 133374021 is about 510.9249152153.

The spelling of 133374021 in words is "one hundred thirty-three million, three hundred seventy-four thousand, twenty-one".