402723 has 12 divisors (see below), whose sum is σ = 602160. Its totient is φ = 259056.

The previous prime is 402697. The next prime is 402739. The reversal of 402723 is 327204.

It is a happy number.

402723 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 402723 - 2⁵ = 402691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402696 and 402705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 511 + ... + 1032.

It is an arithmetic number, because the mean of its divisors is an integer number (50180).

2⁴⁰²⁷²³ is an apocalyptic number.

402723 is a deficient number, since it is larger than the sum of its proper divisors (199437).

402723 is a wasteful number, since it uses less digits than its factorization.

402723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578 (or 1575 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 402723 is about 634.6046013070. The cubic root of 402723 is about 73.8474456405.

Adding to 402723 its reverse (327204), we get a palindrome (729927).

The spelling of 402723 in words is "four hundred two thousand, seven hundred twenty-three", and thus it is an iban number.