4213123 has 4 divisors (see below), whose sum is σ = 4236840. Its totient is φ = 4189408.

The previous prime is 4213103. The next prime is 4213133. The reversal of 4213123 is 3213124.

It is a happy number.

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-4213123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4213097 and 4213106.

It is not an unprimeable number, because it can be changed into a prime (4213103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11590 + ... + 11947.

It is an arithmetic number, because the mean of its divisors is an integer number (1059210).

Almost surely, 2^4213123 is an apocalyptic number.

4213123 is a deficient number, since it is larger than the sum of its proper divisors (23717).

4213123 is a wasteful number, since it uses less digits than its factorization.

4213123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23716.

The product of its digits is 144, while the sum is 16.

The square root of 4213123 is about 2052.5893403211. The cubic root of 4213123 is about 161.5107297647.

Adding to 4213123 its reverse (3213124), we get a palindrome (7426247).

Subtracting from 4213123 its reverse (3213124), we obtain a palindrome (999999).

The spelling of 4213123 in words is "four million, two hundred thirteen thousand, one hundred twenty-three".