133290138 has 16 divisors (see below), whose sum is σ = 269576640. Its totient is φ = 43930656.

The previous prime is 133290127. The next prime is 133290151. The reversal of 133290138 is 831092331.

It is a Curzon number.

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, 124270 + ... + 125337.

It is an arithmetic number, because the mean of its divisors is an integer number (16848540).

Almost surely, 2^133290138 is an apocalyptic number.

133290138 is an abundant number, since it is smaller than the sum of its proper divisors (136286502).

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

133290138 is a wasteful number, since it uses less digits than its factorization.

133290138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249701.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 133290138 is about 11545.1348194813. The cubic root of 133290138 is about 510.8177806515.

The spelling of 133290138 in words is "one hundred thirty-three million, two hundred ninety thousand, one hundred thirty-eight".