402502 has 4 divisors (see below), whose sum is σ = 603756. Its totient is φ = 201250.

The previous prime is 402487. The next prime is 402503. The reversal of 402502 is 205204.

It is a happy number.

402502 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100624 + ... + 100627.

It is an arithmetic number, because the mean of its divisors is an integer number (150939).

2⁴⁰²⁵⁰² is an apocalyptic number.

402502 is a deficient number, since it is larger than the sum of its proper divisors (201254).

402502 is a wasteful number, since it uses less digits than its factorization.

402502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201253.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 402502 is about 634.4304532413. The cubic root of 402502 is about 73.8339348885.

Adding to 402502 its reverse (205204), we get a palindrome (607706).

The spelling of 402502 in words is "four hundred two thousand, five hundred two".