133542271 has 4 divisors (see below), whose sum is σ = 133694392. Its totient is φ = 133390152.

The previous prime is 133542263. The next prime is 133542307. The reversal of 133542271 is 172245331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133542271 - 2³ = 133542263 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 (133542221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74736 + ... + 76501.

It is an arithmetic number, because the mean of its divisors is an integer number (33423598).

Almost surely, 2^133542271 is an apocalyptic number.

133542271 is a deficient number, since it is larger than the sum of its proper divisors (152121).

133542271 is an equidigital number, since it uses as much as digits as its factorization.

133542271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152120.

The product of its digits is 5040, while the sum is 28.

The square root of 133542271 is about 11556.0491085838. The cubic root of 133542271 is about 511.1396671698.

It can be divided in two parts, 13354 and 2271, that added together give a 6-th power (15625 = 5⁶).

The spelling of 133542271 in words is "one hundred thirty-three million, five hundred forty-two thousand, two hundred seventy-one".