16042001 has 2 divisors, whose sum is σ = 16042002. Its totient is φ = 16042000.

The previous prime is 16041997. The next prime is 16042007. The reversal of 16042001 is 10024061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15840400 + 201601 = 3980^2 + 449^2 .

It is an emirp because it is prime and its reverse (10024061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16042001 - 2² = 16041997 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16042007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8021000 + 8021001.

It is an arithmetic number, because the mean of its divisors is an integer number (8021001).

Almost surely, 2^16042001 is an apocalyptic number.

It is an amenable number.

16042001 is a deficient number, since it is larger than the sum of its proper divisors (1).

16042001 is an equidigital number, since it uses as much as digits as its factorization.

16042001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 16042001 is about 4005.2466840383. The cubic root of 16042001 is about 252.2045087587.

Adding to 16042001 its reverse (10024061), we get a palindrome (26066062).

The spelling of 16042001 in words is "sixteen million, forty-two thousand, one".