133242786 has 16 divisors (see below), whose sum is σ = 296095200. Its totient is φ = 44414244.

The previous prime is 133242779. The next prime is 133242797. The reversal of 133242786 is 687242331.

It is a happy number.

It is a super-3 number, since 3×133242786³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 133242786.

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, 1233676 + ... + 1233783.

It is an arithmetic number, because the mean of its divisors is an integer number (18505950).

Almost surely, 2^133242786 is an apocalyptic number.

133242786 is an abundant number, since it is smaller than the sum of its proper divisors (162852414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133242786 is a wasteful number, since it uses less digits than its factorization.

133242786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467470 (or 2467464 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 133242786 is about 11543.0839033596. The cubic root of 133242786 is about 510.7572832813.

It can be divided in two parts, 13324 and 2786, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 133242786 in words is "one hundred thirty-three million, two hundred forty-two thousand, seven hundred eighty-six".