133115242 has 16 divisors (see below), whose sum is σ = 215239752. Its totient is φ = 61378560.

The previous prime is 133115221. The next prime is 133115251. The reversal of 133115242 is 242511331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44209201 + 88906041 = 6649^2 + 9429^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36778 + ... + 40234.

Almost surely, 2^133115242 is an apocalyptic number.

133115242 is a deficient number, since it is larger than the sum of its proper divisors (82124510).

133115242 is a wasteful number, since it uses less digits than its factorization.

133115242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4953.

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

The square root of 133115242 is about 11537.5578871787. The cubic root of 133115242 is about 510.5942605119.

Adding to 133115242 its reverse (242511331), we get a palindrome (375626573).

The spelling of 133115242 in words is "one hundred thirty-three million, one hundred fifteen thousand, two hundred forty-two".