442144147 has 4 divisors (see below), whose sum is σ = 442341280. Its totient is φ = 441947016.

The previous prime is 442144099. The next prime is 442144151. The reversal of 442144147 is 741441244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442144147 - 2¹⁵ = 442111379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442144247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95163 + ... + 99700.

It is an arithmetic number, because the mean of its divisors is an integer number (110585320).

Almost surely, 2^442144147 is an apocalyptic number.

442144147 is a deficient number, since it is larger than the sum of its proper divisors (197133).

442144147 is a wasteful number, since it uses less digits than its factorization.

442144147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197132.

The product of its digits is 14336, while the sum is 31.

The square root of 442144147 is about 21027.2239489667. The cubic root of 442144147 is about 761.8239587775.

The spelling of 442144147 in words is "four hundred forty-two million, one hundred forty-four thousand, one hundred forty-seven".