4243123 has 4 divisors (see below), whose sum is σ = 4357840. Its totient is φ = 4128408.

The previous prime is 4243121. The next prime is 4243139. The reversal of 4243123 is 3213424.

4243123 = 12² + 13² + ... + 233².

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 4243123 - 2¹ = 4243121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4243123.

It is not an unprimeable number, because it can be changed into a prime (4243121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57303 + ... + 57376.

It is an arithmetic number, because the mean of its divisors is an integer number (1089460).

Almost surely, 2^4243123 is an apocalyptic number.

4243123 is a deficient number, since it is larger than the sum of its proper divisors (114717).

4243123 is a wasteful number, since it uses less digits than its factorization.

4243123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114716.

The product of its digits is 576, while the sum is 19.

The square root of 4243123 is about 2059.8842200473. The cubic root of 4243123 is about 161.8931750139.

Adding to 4243123 its reverse (3213424), we get a palindrome (7456547).

The spelling of 4243123 in words is "four million, two hundred forty-three thousand, one hundred twenty-three".