7172123 has 4 divisors (see below), whose sum is σ = 8196720. Its totient is φ = 6147528.

The previous prime is 7172107. The next prime is 7172131. The reversal of 7172123 is 3212717.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3212717 = 67 ⋅47951.

It is a cyclic number.

It is not a de Polignac number, because 7172123 - 2⁴ = 7172107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7172423) 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, 512288 + ... + 512301.

It is an arithmetic number, because the mean of its divisors is an integer number (2049180).

Almost surely, 2^7172123 is an apocalyptic number.

7172123 is a deficient number, since it is larger than the sum of its proper divisors (1024597).

7172123 is a wasteful number, since it uses less digits than its factorization.

7172123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024596.

The product of its digits is 588, while the sum is 23.

The square root of 7172123 is about 2678.0819628981. The cubic root of 7172123 is about 192.8483421159.

The spelling of 7172123 in words is "seven million, one hundred seventy-two thousand, one hundred twenty-three".