4172123 has 4 divisors (see below), whose sum is σ = 4417560. Its totient is φ = 3926688.

The previous prime is 4172117. The next prime is 4172141. The reversal of 4172123 is 3212714.

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 4172123 - 2⁶ = 4172059 is a prime.

It is a super-2 number, since 2×4172123² = 34813220654258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4172095 and 4172104.

It is not an unprimeable number, because it can be changed into a prime (4172183) 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, 122693 + ... + 122726.

It is an arithmetic number, because the mean of its divisors is an integer number (1104390).

Almost surely, 2^4172123 is an apocalyptic number.

4172123 is a deficient number, since it is larger than the sum of its proper divisors (245437).

4172123 is a wasteful number, since it uses less digits than its factorization.

4172123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245436.

The product of its digits is 336, while the sum is 20.

The square root of 4172123 is about 2042.5775383079. The cubic root of 4172123 is about 160.9851072216.

Adding to 4172123 its reverse (3212714), we get a palindrome (7384837).

The spelling of 4172123 in words is "four million, one hundred seventy-two thousand, one hundred twenty-three".