402315 has 8 divisors (see below), whose sum is σ = 643728. Its totient is φ = 214560.

The previous prime is 402313. The next prime is 402329. The reversal of 402315 is 513204.

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

It is not a de Polignac number, because 402315 - 2¹ = 402313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 26821 = 402315 / (4 + 0 + 2 + 3 + 1 + 5).

It is a junction number, because it is equal to n+sod(n) for n = 402294 and 402303.

It is not an unprimeable number, because it can be changed into a prime (402313) 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, 13396 + ... + 13425.

It is an arithmetic number, because the mean of its divisors is an integer number (80466).

2⁴⁰²³¹⁵ is an apocalyptic number.

402315 is a deficient number, since it is larger than the sum of its proper divisors (241413).

402315 is a wasteful number, since it uses less digits than its factorization.

402315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26829.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 402315 is about 634.2830598400. The cubic root of 402315 is about 73.8224988504.

Adding to 402315 its reverse (513204), we get a palindrome (915519).

Subtracting 402315 from its reverse (513204), we obtain a square (110889 = 333²).

It can be divided in two parts, 402 and 315, that added together give a palindrome (717).

The spelling of 402315 in words is "four hundred two thousand, three hundred fifteen".