16021043 has 2 divisors, whose sum is σ = 16021044. Its totient is φ = 16021042.

The previous prime is 16021039. The next prime is 16021063. The reversal of 16021043 is 34012061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16021043 - 2² = 16021039 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16021013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8010521 + 8010522.

It is an arithmetic number, because the mean of its divisors is an integer number (8010522).

Almost surely, 2^16021043 is an apocalyptic number.

16021043 is a deficient number, since it is larger than the sum of its proper divisors (1).

16021043 is an equidigital number, since it uses as much as digits as its factorization.

16021043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 16021043 is about 4002.6295107092. The cubic root of 16021043 is about 252.0946304130.

The spelling of 16021043 in words is "sixteen million, twenty-one thousand, forty-three".