402765 has 16 divisors (see below), whose sum is σ = 703296. Its totient is φ = 195200.

The previous prime is 402763. The next prime is 402767. The reversal of 402765 is 567204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (402763) and next prime (402767).

It is not a de Polignac number, because 402765 - 2¹ = 402763 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1056 + ... + 1385.

It is an arithmetic number, because the mean of its divisors is an integer number (43956).

2⁴⁰²⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

402765 is a deficient number, since it is larger than the sum of its proper divisors (300531).

402765 is a wasteful number, since it uses less digits than its factorization.

402765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 402765 is about 634.6376919156. The cubic root of 402765 is about 73.8500127357.

Adding to 402765 its reverse (567204), we get a palindrome (969969).

The spelling of 402765 in words is "four hundred two thousand, seven hundred sixty-five".