7123423 has 8 divisors (see below), whose sum is σ = 7673600. Its totient is φ = 6590808.

The previous prime is 7123421. The next prime is 7123427. The reversal of 7123423 is 3243217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7123423 - 2¹ = 7123421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7123394 and 7123403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7123421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3543 + ... + 5176.

It is an arithmetic number, because the mean of its divisors is an integer number (959200).

Almost surely, 2^7123423 is an apocalyptic number.

7123423 is a deficient number, since it is larger than the sum of its proper divisors (550177).

7123423 is a wasteful number, since it uses less digits than its factorization.

7123423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8781.

The product of its digits is 1008, while the sum is 22.

The square root of 7123423 is about 2668.9741474956. The cubic root of 7123423 is about 192.4108588232.

The spelling of 7123423 in words is "seven million, one hundred twenty-three thousand, four hundred twenty-three".