133136430 has 144 divisors (see below), whose sum is σ = 389034576. Its totient is φ = 29057280.

The previous prime is 133136407. The next prime is 133136447. The reversal of 133136430 is 34631331.

It is a self number, because there is not a number n which added to its sum of digits gives 133136430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2832667 + ... + 2832713.

It is an arithmetic number, because the mean of its divisors is an integer number (2701629).

Almost surely, 2^133136430 is an apocalyptic number.

133136430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133136430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194517288).

133136430 is an abundant number, since it is smaller than the sum of its proper divisors (255898146).

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

133136430 is a wasteful number, since it uses less digits than its factorization.

133136430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 133136430 is about 11538.4760692216. The cubic root of 133136430 is about 510.6213495642.

Adding to 133136430 its reverse (34631331), we get a palindrome (167767761).

The spelling of 133136430 in words is "one hundred thirty-three million, one hundred thirty-six thousand, four hundred thirty".