4242071 has 4 divisors (see below), whose sum is σ = 4378944. Its totient is φ = 4105200.

The previous prime is 4242059. The next prime is 4242109. The reversal of 4242071 is 1702424.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4242071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242031) 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 3 ways as a sum of consecutive naturals, for example, 68390 + ... + 68451.

It is an arithmetic number, because the mean of its divisors is an integer number (1094736).

Almost surely, 2^4242071 is an apocalyptic number.

4242071 is a deficient number, since it is larger than the sum of its proper divisors (136873).

4242071 is a wasteful number, since it uses less digits than its factorization.

4242071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136872.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 4242071 is about 2059.6288500601. The cubic root of 4242071 is about 161.8797944844.

Adding to 4242071 its reverse (1702424), we get a palindrome (5944495).

The spelling of 4242071 in words is "four million, two hundred forty-two thousand, seventy-one".