402485 has 8 divisors (see below), whose sum is σ = 488376. Its totient is φ = 318400.

The previous prime is 402443. The next prime is 402487. The reversal of 402485 is 584204.

It can be written as a sum of positive squares in 4 ways, for example, as 131044 + 271441 = 362^2 + 521^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-402485 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402487) 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, 107 + ... + 903.

It is an arithmetic number, because the mean of its divisors is an integer number (61047).

2⁴⁰²⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

402485 is a deficient number, since it is larger than the sum of its proper divisors (85891).

402485 is a wasteful number, since it uses less digits than its factorization.

402485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 402485 is about 634.4170552562. The cubic root of 402485 is about 73.8328953950.

Adding to 402485 its reverse (584204), we get a palindrome (986689).

The spelling of 402485 in words is "four hundred two thousand, four hundred eighty-five".