133440532 has 12 divisors (see below), whose sum is σ = 233646336. Its totient is φ = 66684440.

The previous prime is 133440521. The next prime is 133440533. The reversal of 133440532 is 235044331.

It is a junction number, because it is equal to n+sod(n) for n = 133440497 and 133440506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133440533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543 + ... + 16345.

It is an arithmetic number, because the mean of its divisors is an integer number (19470528).

Almost surely, 2^133440532 is an apocalyptic number.

It is an amenable number.

133440532 is a deficient number, since it is larger than the sum of its proper divisors (100205804).

133440532 is a wasteful number, since it uses less digits than its factorization.

133440532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17918 (or 17916 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 133440532 is about 11551.6462895987. The cubic root of 133440532 is about 511.0098305024.

Adding to 133440532 its reverse (235044331), we get a palindrome (368484863).

The spelling of 133440532 in words is "one hundred thirty-three million, four hundred forty thousand, five hundred thirty-two".