832421 has 2 divisors, whose sum is σ = 832422. Its totient is φ = 832420.

The previous prime is 832411. The next prime is 832427. The reversal of 832421 is 124238.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 829921 + 2500 = 911^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 832421 - 2¹⁴ = 816037 is a prime.

It is an Ulam number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 832393 and 832402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (832427) 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, 416210 + 416211.

It is an arithmetic number, because the mean of its divisors is an integer number (416211).

2⁸³²⁴²¹ is an apocalyptic number.

It is an amenable number.

832421 is a deficient number, since it is larger than the sum of its proper divisors (1).

832421 is an equidigital number, since it uses as much as digits as its factorization.

832421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 20.

The square root of 832421 is about 912.3710867843. The cubic root of 832421 is about 94.0692488066.

Adding to 832421 its reverse (124238), we get a palindrome (956659).

The spelling of 832421 in words is "eight hundred thirty-two thousand, four hundred twenty-one".