402500 has 60 divisors (see below), whose sum is σ = 1049664. Its totient is φ = 132000.

The previous prime is 402487. The next prime is 402503. The reversal of 402500 is 5204.

402500 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is a sliding number, since 402500 = 2500 + 400000 and 1/2500 + 1/400000 = 0.000402500.

It is an Ulam number.

It is a congruent number.

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

402500 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17489 + ... + 17511.

2⁴⁰²⁵⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524832).

402500 is an abundant number, since it is smaller than the sum of its proper divisors (647164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402500 is a wasteful number, since it uses less digits than its factorization.

402500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 402500 is about 634.4288770225. The cubic root of 402500 is about 73.8338125966.

Adding to 402500 its reverse (5204), we get a palindrome (407704).

It can be divided in two parts, 40 and 2500, that multiplied together give a 5-th power (100000 = 10⁵).

The spelling of 402500 in words is "four hundred two thousand, five hundred".