32145129421 has 2 divisors, whose sum is σ = 32145129422. Its totient is φ = 32145129420.

The previous prime is 32145129361. The next prime is 32145129463. The reversal of 32145129421 is 12492154123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31965864100 + 179265321 = 178790^2 + 13389^2 .

It is a cyclic number.

It is not a de Polignac number, because 32145129421 - 2¹¹ = 32145127373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32145124421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16072564710 + 16072564711.

It is an arithmetic number, because the mean of its divisors is an integer number (16072564711).

Almost surely, 2^32145129421 is an apocalyptic number.

It is an amenable number.

32145129421 is a deficient number, since it is larger than the sum of its proper divisors (1).

32145129421 is an equidigital number, since it uses as much as digits as its factorization.

32145129421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The spelling of 32145129421 in words is "thirty-two billion, one hundred forty-five million, one hundred twenty-nine thousand, four hundred twenty-one".