7421723 has 8 divisors (see below), whose sum is σ = 7979520. Its totient is φ = 6880680.

The previous prime is 7421717. The next prime is 7421759. The reversal of 7421723 is 3271247.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7421723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7421692 and 7421701.

It is not an unprimeable number, because it can be changed into a prime (7421773) 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, 3263 + ... + 5048.

It is an arithmetic number, because the mean of its divisors is an integer number (997440).

Almost surely, 2^7421723 is an apocalyptic number.

7421723 is a deficient number, since it is larger than the sum of its proper divisors (557797).

7421723 is a wasteful number, since it uses less digits than its factorization.

7421723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8377.

The product of its digits is 2352, while the sum is 26.

The square root of 7421723 is about 2724.2839426168. The cubic root of 7421723 is about 195.0600122106.

The spelling of 7421723 in words is "seven million, four hundred twenty-one thousand, seven hundred twenty-three".