133452021 has 8 divisors (see below), whose sum is σ = 178103200. Its totient is φ = 88884432.

The previous prime is 133452013. The next prime is 133452031. The reversal of 133452021 is 120254331.

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

It is not a de Polignac number, because 133452021 - 2³ = 133452013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133452001) 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, 17071 + ... + 23628.

It is an arithmetic number, because the mean of its divisors is an integer number (22262900).

Almost surely, 2^133452021 is an apocalyptic number.

It is an amenable number.

133452021 is a deficient number, since it is larger than the sum of its proper divisors (44651179).

133452021 is a wasteful number, since it uses less digits than its factorization.

133452021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41795.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 133452021 is about 11552.1435673212. The cubic root of 133452021 is about 511.0244957703.

The spelling of 133452021 in words is "one hundred thirty-three million, four hundred fifty-two thousand, twenty-one".