1405723 has 8 divisors (see below), whose sum is σ = 1566720. Its totient is φ = 1250280.

The previous prime is 1405721. The next prime is 1405751. The reversal of 1405723 is 3275041.

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 1405723 - 2¹ = 1405721 is a prime.

It is a super-3 number, since 3×1405723³ = 8333366966717004201, which contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1405694 and 1405703.

It is not an unprimeable number, because it can be changed into a prime (1405721) 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, 843 + ... + 1876.

It is an arithmetic number, because the mean of its divisors is an integer number (195840).

2^1405723 is an apocalyptic number.

1405723 is a deficient number, since it is larger than the sum of its proper divisors (160997).

1405723 is a wasteful number, since it uses less digits than its factorization.

1405723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 1405723 is about 1185.6318990311. The cubic root of 1405723 is about 112.0211216543.

The spelling of 1405723 in words is "one million, four hundred five thousand, seven hundred twenty-three".