2142447 has 8 divisors (see below), whose sum is σ = 2872320. Its totient is φ = 1420440.

The previous prime is 2142431. The next prime is 2142449. The reversal of 2142447 is 7442412.

2142447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2142447 - 2⁴ = 2142431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1297 + ... + 2442.

It is an arithmetic number, because the mean of its divisors is an integer number (359040).

2^2142447 is an apocalyptic number.

2142447 is a deficient number, since it is larger than the sum of its proper divisors (729873).

2142447 is a wasteful number, since it uses less digits than its factorization.

2142447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933.

The product of its digits is 1792, while the sum is 24.

The square root of 2142447 is about 1463.7100122634. The cubic root of 2142447 is about 128.9149731140.

Adding to 2142447 its reverse (7442412), we get a palindrome (9584859).

The spelling of 2142447 in words is "two million, one hundred forty-two thousand, four hundred forty-seven".