132636421 has 2 divisors, whose sum is σ = 132636422. Its totient is φ = 132636420.

The previous prime is 132636419. The next prime is 132636443. The reversal of 132636421 is 124636231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113188321 + 19448100 = 10639^2 + 4410^2 .

It is a cyclic number.

It is not a de Polignac number, because 132636421 - 2¹ = 132636419 is a prime.

It is a super-3 number, since 3×132636421³ (a number of 25 digits) contains 333 as substring.

Together with 132636419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 132636421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132636221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66318210 + 66318211.

It is an arithmetic number, because the mean of its divisors is an integer number (66318211).

Almost surely, 2^132636421 is an apocalyptic number.

It is an amenable number.

132636421 is a deficient number, since it is larger than the sum of its proper divisors (1).

132636421 is an equidigital number, since it uses as much as digits as its factorization.

132636421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 28.

The square root of 132636421 is about 11516.7886583023. The cubic root of 132636421 is about 509.9813154759.

The spelling of 132636421 in words is "one hundred thirty-two million, six hundred thirty-six thousand, four hundred twenty-one".