132021405 has 96 divisors (see below), whose sum is σ = 264176640. Its totient is φ = 60549120.

The previous prime is 132021401. The next prime is 132021431. The reversal of 132021405 is 504120231.

It is not a de Polignac number, because 132021405 - 2² = 132021401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132021401) 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 95 ways as a sum of consecutive naturals, for example, 450439 + ... + 450731.

It is an arithmetic number, because the mean of its divisors is an integer number (2751840).

Almost surely, 2^132021405 is an apocalyptic number.

132021405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

132021405 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

132021405 is a wasteful number, since it uses less digits than its factorization.

132021405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 132021405 is about 11490.0567883714. The cubic root of 132021405 is about 509.1918573538.

Adding to 132021405 its reverse (504120231), we get a palindrome (636141636).

The spelling of 132021405 in words is "one hundred thirty-two million, twenty-one thousand, four hundred five".