132145021 has 2 divisors, whose sum is σ = 132145022. Its totient is φ = 132145020.

The previous prime is 132145003. The next prime is 132145049. The reversal of 132145021 is 120541231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128572921 + 3572100 = 11339^2 + 1890^2 .

It is a cyclic number.

It is not a de Polignac number, because 132145021 - 2⁵ = 132144989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 132145021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132145121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66072510 + 66072511.

It is an arithmetic number, because the mean of its divisors is an integer number (66072511).

Almost surely, 2^132145021 is an apocalyptic number.

It is an amenable number.

132145021 is a deficient number, since it is larger than the sum of its proper divisors (1).

132145021 is an equidigital number, since it uses as much as digits as its factorization.

132145021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 132145021 is about 11495.4347895154. The cubic root of 132145021 is about 509.3507321596.

Adding to 132145021 its reverse (120541231), we get a palindrome (252686252).

The spelling of 132145021 in words is "one hundred thirty-two million, one hundred forty-five thousand, twenty-one".