40202105 has 4 divisors (see below), whose sum is σ = 48242532. Its totient is φ = 32161680.

The previous prime is 40202087. The next prime is 40202153. The reversal of 40202105 is 50120204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11182336 + 29019769 = 3344^2 + 5387^2 .

It is not a de Polignac number, because 40202105 - 2⁸ = 40201849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40202105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4020206 + ... + 4020215.

It is an arithmetic number, because the mean of its divisors is an integer number (12060633).

Almost surely, 2^40202105 is an apocalyptic number.

It is an amenable number.

40202105 is a deficient number, since it is larger than the sum of its proper divisors (8040427).

40202105 is an equidigital number, since it uses as much as digits as its factorization.

40202105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8040426.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 40202105 is about 6340.5129918643. The cubic root of 40202105 is about 342.5702131080.

Adding to 40202105 its reverse (50120204), we get a palindrome (90322309).

The spelling of 40202105 in words is "forty million, two hundred two thousand, one hundred five".