16442147 has 2 divisors, whose sum is σ = 16442148. Its totient is φ = 16442146.

The previous prime is 16442143. The next prime is 16442149. The reversal of 16442147 is 74124461.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16442147 - 2² = 16442143 is a prime.

It is a super-3 number, since 3×16442147³ (a number of 23 digits) contains 333 as substring.

Together with 16442149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16442141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221073 + 8221074.

It is an arithmetic number, because the mean of its divisors is an integer number (8221074).

Almost surely, 2^16442147 is an apocalyptic number.

16442147 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442147 is an equidigital number, since it uses as much as digits as its factorization.

16442147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 29.

The square root of 16442147 is about 4054.8917371491. The cubic root of 16442147 is about 254.2842777857.

The spelling of 16442147 in words is "sixteen million, four hundred forty-two thousand, one hundred forty-seven".