132531421 has 24 divisors (see below), whose sum is σ = 152258400. Its totient is φ = 115130400.

The previous prime is 132531419. The next prime is 132531431. The reversal of 132531421 is 124135231.

It is a happy number.

It is not a de Polignac number, because 132531421 - 2¹ = 132531419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 132531392 and 132531401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132531431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 628006 + ... + 628216.

It is an arithmetic number, because the mean of its divisors is an integer number (6344100).

Almost surely, 2^132531421 is an apocalyptic number.

132531421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

132531421 is a deficient number, since it is larger than the sum of its proper divisors (19726979).

132531421 is a wasteful number, since it uses less digits than its factorization.

132531421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 430 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 132531421 is about 11512.2291933404. The cubic root of 132531421 is about 509.8467064594.

Adding to 132531421 its reverse (124135231), we get a palindrome (256666652).

The spelling of 132531421 in words is "one hundred thirty-two million, five hundred thirty-one thousand, four hundred twenty-one".