16142032021 has 2 divisors, whose sum is σ = 16142032022. Its totient is φ = 16142032020.

The previous prime is 16142032019. The next prime is 16142032073. The reversal of 16142032021 is 12023024161.

16142032021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12732639921 + 3409392100 = 112839^2 + 58390^2 .

It is an emirp because it is prime and its reverse (12023024161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16142032021 - 2¹ = 16142032019 is a prime.

Together with 16142032019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 16142031983 and 16142032001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16142032121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8071016010 + 8071016011.

It is an arithmetic number, because the mean of its divisors is an integer number (8071016011).

Almost surely, 2^16142032021 is an apocalyptic number.

It is an amenable number.

16142032021 is a deficient number, since it is larger than the sum of its proper divisors (1).

16142032021 is an equidigital number, since it uses as much as digits as its factorization.

16142032021 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 22.

Adding to 16142032021 its reverse (12023024161), we get a palindrome (28165056182).

The spelling of 16142032021 in words is "sixteen billion, one hundred forty-two million, thirty-two thousand, twenty-one".