133432005 has 32 divisors (see below), whose sum is σ = 248603904. Its totient is φ = 59844096.

The previous prime is 133432001. The next prime is 133432049. The reversal of 133432005 is 500234331.

It is not a de Polignac number, because 133432005 - 2² = 133432001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133432001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6424 + ... + 17553.

It is an arithmetic number, because the mean of its divisors is an integer number (7768872).

Almost surely, 2^133432005 is an apocalyptic number.

133432005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133432005 is a deficient number, since it is larger than the sum of its proper divisors (115171899).

133432005 is a wasteful number, since it uses less digits than its factorization.

133432005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24045.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 133432005 is about 11551.2772021106. The cubic root of 133432005 is about 510.9989455697.

Adding to 133432005 its reverse (500234331), we get a palindrome (633666336).

The spelling of 133432005 in words is "one hundred thirty-three million, four hundred thirty-two thousand, five".