133135540 has 24 divisors (see below), whose sum is σ = 283127040. Its totient is φ = 52579488.

The previous prime is 133135511. The next prime is 133135547. The reversal of 133135540 is 45531331.

It is a super-2 number, since 2×133135540² = 35450144022183200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133135547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40552 + ... + 43711.

It is an arithmetic number, because the mean of its divisors is an integer number (11796960).

Almost surely, 2^133135540 is an apocalyptic number.

133135540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133135540 is an abundant number, since it is smaller than the sum of its proper divisors (149991500).

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

133135540 is a wasteful number, since it uses less digits than its factorization.

133135540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84351 (or 84349 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 133135540 is about 11538.4375025391. The cubic root of 133135540 is about 510.6202117489.

Adding to 133135540 its reverse (45531331), we get a palindrome (178666871).

The spelling of 133135540 in words is "one hundred thirty-three million, one hundred thirty-five thousand, five hundred forty".