6442147 has 8 divisors (see below), whose sum is σ = 6704640. Its totient is φ = 6182400.

The previous prime is 6442129. The next prime is 6442153. The reversal of 6442147 is 7412446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6442147 - 2¹¹ = 6440099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6442127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5022 + ... + 6172.

It is an arithmetic number, because the mean of its divisors is an integer number (838080).

Almost surely, 2^6442147 is an apocalyptic number.

6442147 is a deficient number, since it is larger than the sum of its proper divisors (262493).

6442147 is a wasteful number, since it uses less digits than its factorization.

6442147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373.

The product of its digits is 5376, while the sum is 28.

The square root of 6442147 is about 2538.1384910993. The cubic root of 6442147 is about 186.0702224539.

Subtracting 6442147 from its reverse (7412446), we obtain a cube (970299 = 99³).

The spelling of 6442147 in words is "six million, four hundred forty-two thousand, one hundred forty-seven".