32403421 has 2 divisors, whose sum is σ = 32403422. Its totient is φ = 32403420.

The previous prime is 32403409. The next prime is 32403431. The reversal of 32403421 is 12430423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20748025 + 11655396 = 4555^2 + 3414^2 .

It is an emirp because it is prime and its reverse (12430423) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32403421 - 2¹¹ = 32401373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32403431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16201710 + 16201711.

It is an arithmetic number, because the mean of its divisors is an integer number (16201711).

Almost surely, 2^32403421 is an apocalyptic number.

It is an amenable number.

32403421 is a deficient number, since it is larger than the sum of its proper divisors (1).

32403421 is an equidigital number, since it uses as much as digits as its factorization.

32403421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 32403421 is about 5692.4002845900. The cubic root of 32403421 is about 318.8087905913.

Adding to 32403421 its reverse (12430423), we get a palindrome (44833844).

The spelling of 32403421 in words is "thirty-two million, four hundred three thousand, four hundred twenty-one".