4242143 has 4 divisors (see below), whose sum is σ = 4426608. Its totient is φ = 4057680.

The previous prime is 4242137. The next prime is 4242167. The reversal of 4242143 is 3412424.

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 4242143 - 2⁴ = 4242127 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92198 + ... + 92243.

It is an arithmetic number, because the mean of its divisors is an integer number (1106652).

Almost surely, 2^4242143 is an apocalyptic number.

4242143 is a deficient number, since it is larger than the sum of its proper divisors (184465).

4242143 is a wasteful number, since it uses less digits than its factorization.

4242143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184464.

The product of its digits is 768, while the sum is 20.

The square root of 4242143 is about 2059.6463288633. The cubic root of 4242143 is about 161.8807103326.

Adding to 4242143 its reverse (3412424), we get a palindrome (7654567).

It can be divided in two parts, 4242 and 143, that multiplied together give a palindrome (606606).

The spelling of 4242143 in words is "four million, two hundred forty-two thousand, one hundred forty-three".