133112542 has 4 divisors (see below), whose sum is σ = 199668816. Its totient is φ = 66556270.

The previous prime is 133112519. The next prime is 133112591. The reversal of 133112542 is 245211331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245211331 = 3491 ⋅70241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33278134 + ... + 33278137.

It is an arithmetic number, because the mean of its divisors is an integer number (49917204).

Almost surely, 2^133112542 is an apocalyptic number.

133112542 is a deficient number, since it is larger than the sum of its proper divisors (66556274).

133112542 is an equidigital number, since it uses as much as digits as its factorization.

133112542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66556273.

The product of its digits is 720, while the sum is 22.

The square root of 133112542 is about 11537.4408774216. The cubic root of 133112542 is about 510.5908083307.

Adding to 133112542 its reverse (245211331), we get a palindrome (378323873).

The spelling of 133112542 in words is "one hundred thirty-three million, one hundred twelve thousand, five hundred forty-two".