133235242 has 24 divisors (see below), whose sum is σ = 233883936. Its totient is φ = 55762056.

The previous prime is 133235233. The next prime is 133235243. The reversal of 133235242 is 242532331.

It is not an unprimeable number, because it can be changed into a prime (133235243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23313 + ... + 28459.

It is an arithmetic number, because the mean of its divisors is an integer number (9745164).

Almost surely, 2^133235242 is an apocalyptic number.

133235242 is a deficient number, since it is larger than the sum of its proper divisors (100648694).

133235242 is an equidigital number, since it uses as much as digits as its factorization.

133235242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5242 (or 5199 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 133235242 is about 11542.7571229754. The cubic root of 133235242 is about 510.7476436709.

Adding to 133235242 its reverse (242532331), we get a palindrome (375767573).

The spelling of 133235242 in words is "one hundred thirty-three million, two hundred thirty-five thousand, two hundred forty-two".