4242123 has 12 divisors (see below), whose sum is σ = 6228768. Its totient is φ = 2781360.

The previous prime is 4242109. The next prime is 4242127. The reversal of 4242123 is 3212424.

It is not a de Polignac number, because 4242123 - 2⁶ = 4242059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4242096 and 4242105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242127) 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 11 ways as a sum of consecutive naturals, for example, 3315 + ... + 4412.

It is an arithmetic number, because the mean of its divisors is an integer number (519064).

Almost surely, 2^4242123 is an apocalyptic number.

4242123 is a deficient number, since it is larger than the sum of its proper divisors (1986645).

4242123 is a wasteful number, since it uses less digits than its factorization.

4242123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7794 (or 7791 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 4242123 is about 2059.6414736551. The cubic root of 4242123 is about 161.8804559314.

Adding to 4242123 its reverse (3212424), we get a palindrome (7454547).

The spelling of 4242123 in words is "four million, two hundred forty-two thousand, one hundred twenty-three".