726122923 has 4 divisors (see below), whose sum is σ = 726205480. Its totient is φ = 726040368.

The previous prime is 726122899. The next prime is 726122939. The reversal of 726122923 is 329221627.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 329221627 = 7 ⋅47031661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726122923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726122953) 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, 26265 + ... + 46282.

It is an arithmetic number, because the mean of its divisors is an integer number (181551370).

Almost surely, 2^726122923 is an apocalyptic number.

726122923 is a deficient number, since it is larger than the sum of its proper divisors (82557).

726122923 is a wasteful number, since it uses less digits than its factorization.

726122923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82556.

The product of its digits is 18144, while the sum is 34.

The square root of 726122923 is about 26946.6681242784. The cubic root of 726122923 is about 898.8144567002.

The spelling of 726122923 in words is "seven hundred twenty-six million, one hundred twenty-two thousand, nine hundred twenty-three".