40202 has 4 divisors (see below), whose sum is σ = 60306. Its totient is φ = 20100.

The previous prime is 40193. The next prime is 40213. The reversal of 40202 is 20204.

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

It can be written as a sum of positive squares in only one way, i.e., 36481 + 3721 = 191^2 + 61^2 .

40202 is a modest number, since divided by 202 gives 4 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 40202.

It is an unprimeable number.

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, 10049 + ... + 10052.

2⁴⁰²⁰² is an apocalyptic number.

40202 is a deficient number, since it is larger than the sum of its proper divisors (20104).

40202 is a wasteful number, since it uses less digits than its factorization.

40202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20103.

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 40202 is about 200.5043640423. The cubic root of 40202 is about 34.2569914866.

Subtracting from 40202 its product of nonzero digits (16), we obtain a triangular number (40186 = T₂₈₃).

Adding to 40202 its reverse (20204), we get a palindrome (60406).

It can be divided in two parts, 40 and 202, that added together give a palindrome (242).

The spelling of 40202 in words is "forty thousand, two hundred two", and thus it is an iban number.