133640502 has 32 divisors (see below), whose sum is σ = 283500000. Its totient is φ = 41852928.

The previous prime is 133640501. The next prime is 133640503. The reversal of 133640502 is 205046331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (133640501) and next prime (133640503).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133640501) by changing a digit.

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, 106374 + ... + 107622.

It is an arithmetic number, because the mean of its divisors is an integer number (8859375).

Almost surely, 2^133640502 is an apocalyptic number.

133640502 is an abundant number, since it is smaller than the sum of its proper divisors (149859498).

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

133640502 is a wasteful number, since it uses less digits than its factorization.

133640502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 133640502 is about 11560.2985255572. The cubic root of 133640502 is about 511.2649644614.

Adding to 133640502 its reverse (205046331), we get a palindrome (338686833).

It can be divided in two parts, 1 and 33640502, that added together give a triangular number (33640503 = T₈₂₀₂).

The spelling of 133640502 in words is "one hundred thirty-three million, six hundred forty thousand, five hundred two".