132121421 has 8 divisors (see below), whose sum is σ = 141700320. Its totient is φ = 122805072.

The previous prime is 132121391. The next prime is 132121427. The reversal of 132121421 is 124121231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 132121421 - 2¹⁰ = 132120397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 132121421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132121427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64595 + ... + 66608.

It is an arithmetic number, because the mean of its divisors is an integer number (17712540).

Almost surely, 2^132121421 is an apocalyptic number.

It is an amenable number.

132121421 is a deficient number, since it is larger than the sum of its proper divisors (9578899).

132121421 is a wasteful number, since it uses less digits than its factorization.

132121421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131275.

The product of its digits is 96, while the sum is 17.

The square root of 132121421 is about 11494.4082492314. The cubic root of 132121421 is about 509.3204084217.

Adding to 132121421 its reverse (124121231), we get a palindrome (256242652).

The spelling of 132121421 in words is "one hundred thirty-two million, one hundred twenty-one thousand, four hundred twenty-one".