132420181 has 2 divisors, whose sum is σ = 132420182. Its totient is φ = 132420180.

The previous prime is 132420149. The next prime is 132420187. The reversal of 132420181 is 181024231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132135025 + 285156 = 11495^2 + 534^2 .

It is a cyclic number.

It is not a de Polignac number, because 132420181 - 2⁵ = 132420149 is a prime.

It is a super-2 number, since 2×132420181² = 35070208672145522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132420187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66210090 + 66210091.

It is an arithmetic number, because the mean of its divisors is an integer number (66210091).

Almost surely, 2^132420181 is an apocalyptic number.

It is an amenable number.

132420181 is a deficient number, since it is larger than the sum of its proper divisors (1).

132420181 is an equidigital number, since it uses as much as digits as its factorization.

132420181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 132420181 is about 11507.3967951053. The cubic root of 132420181 is about 509.7040202381.

The spelling of 132420181 in words is "one hundred thirty-two million, four hundred twenty thousand, one hundred eighty-one".