402085 has 16 divisors (see below), whose sum is σ = 518400. Its totient is φ = 298816.
The previous prime is 402071. The next prime is 402089. The reversal of 402085 is 580204.
402085 = T86 + T87 + ... + T144.
402085 = 1962 + 1972 + ... + 2052.
It is a happy number.
It is not a de Polignac number, because 402085 - 25 = 402053 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (402089) 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, 6786 + ... + 6844.
It is an arithmetic number, because the mean of its divisors is an integer number (32400).
2402085 is an apocalyptic number.
It is an amenable number.
402085 is a deficient number, since it is larger than the sum of its proper divisors (116315).
402085 is a wasteful number, since it uses less digits than its factorization.
402085 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 140.
The product of its (nonzero) digits is 320, while the sum is 19.
The square root of 402085 is about 634.1017268546. The cubic root of 402085 is about 73.8084282744.
Adding to 402085 its reverse (580204), we get a palindrome (982289).
The spelling of 402085 in words is "four hundred two thousand, eighty-five".
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