132421 has 2 divisors, whose sum is σ = 132422. Its totient is φ = 132420.

The previous prime is 132409. The next prime is 132437. The reversal of 132421 is 124231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81796 + 50625 = 286^2 + 225^2 .

It is an emirp because it is prime and its reverse (124231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 132421 - 2⁹ = 131909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66210 + 66211.

It is an arithmetic number, because the mean of its divisors is an integer number (66211).

2¹³²⁴²¹ is an apocalyptic number.

It is an amenable number.

132421 is a deficient number, since it is larger than the sum of its proper divisors (1).

132421 is an equidigital number, since it uses as much as digits as its factorization.

132421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 13.

The square root of 132421 is about 363.8969634388. The cubic root of 132421 is about 50.9705071052.

Adding to 132421 its reverse (124231), we get a palindrome (256652).

The spelling of 132421 in words is "one hundred thirty-two thousand, four hundred twenty-one".