133542113 has 4 divisors (see below), whose sum is σ = 134767380. Its totient is φ = 132316848.

The previous prime is 133542109. The next prime is 133542121. The reversal of 133542113 is 311245331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32398864 + 101143249 = 5692^2 + 10057^2 .

It is a cyclic number.

It is not a de Polignac number, because 133542113 - 2² = 133542109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133548113) 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, 612470 + ... + 612687.

It is an arithmetic number, because the mean of its divisors is an integer number (33691845).

Almost surely, 2^133542113 is an apocalyptic number.

It is an amenable number.

133542113 is a deficient number, since it is larger than the sum of its proper divisors (1225267).

133542113 is a wasteful number, since it uses less digits than its factorization.

133542113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225266.

The product of its digits is 1080, while the sum is 23.

The square root of 133542113 is about 11556.0422723353. The cubic root of 133542113 is about 511.1394655855.

Adding to 133542113 its reverse (311245331), we get a palindrome (444787444).

The spelling of 133542113 in words is "one hundred thirty-three million, five hundred forty-two thousand, one hundred thirteen".