132156421 has 2 divisors, whose sum is σ = 132156422. Its totient is φ = 132156420.

The previous prime is 132156403. The next prime is 132156443. The reversal of 132156421 is 124651231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81902500 + 50253921 = 9050^2 + 7089^2 .

It is a cyclic number.

It is not a de Polignac number, because 132156421 - 2⁷ = 132156293 is a prime.

It is a super-2 number, since 2×132156421² = 34930639223058482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132156461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66078210 + 66078211.

It is an arithmetic number, because the mean of its divisors is an integer number (66078211).

Almost surely, 2^132156421 is an apocalyptic number.

It is an amenable number.

132156421 is a deficient number, since it is larger than the sum of its proper divisors (1).

132156421 is an equidigital number, since it uses as much as digits as its factorization.

132156421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 132156421 is about 11495.9306278352. The cubic root of 132156421 is about 509.3653787737.

The spelling of 132156421 in words is "one hundred thirty-two million, one hundred fifty-six thousand, four hundred twenty-one".