133123250 has 32 divisors (see below), whose sum is σ = 268383024. Its totient is φ = 49152000.

The previous prime is 133123229. The next prime is 133123267. The reversal of 133123250 is 52321331.

It can be written as a sum of positive squares in 8 ways, for example, as 6538249 + 126585001 = 2557^2 + 11251^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17231 + ... + 23730.

Almost surely, 2^133123250 is an apocalyptic number.

133123250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133123250 is an abundant number, since it is smaller than the sum of its proper divisors (135259774).

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

133123250 is a wasteful number, since it uses less digits than its factorization.

133123250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40991 (or 40981 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 133123250 is about 11537.9049224718. The cubic root of 133123250 is about 510.6044991512.

Adding to 133123250 its reverse (52321331), we get a palindrome (185444581).

The spelling of 133123250 in words is "one hundred thirty-three million, one hundred twenty-three thousand, two hundred fifty".