132120421 has 4 divisors (see below), whose sum is σ = 133981344. Its totient is φ = 130259500.

The previous prime is 132120397. The next prime is 132120427. The reversal of 132120421 is 124021231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124021231 = 79 ⋅1569889.

It is a cyclic number.

It is not a de Polignac number, because 132120421 - 2¹⁷ = 131989349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 132120395 and 132120404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132120427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930355 + ... + 930496.

It is an arithmetic number, because the mean of its divisors is an integer number (33495336).

Almost surely, 2^132120421 is an apocalyptic number.

It is an amenable number.

132120421 is a deficient number, since it is larger than the sum of its proper divisors (1860923).

132120421 is an equidigital number, since it uses as much as digits as its factorization.

132120421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860922.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 132120421 is about 11494.3647497372. The cubic root of 132120421 is about 509.3191234378.

Adding to 132120421 its reverse (124021231), we get a palindrome (256141652).

The spelling of 132120421 in words is "one hundred thirty-two million, one hundred twenty thousand, four hundred twenty-one".