40042440202 has 4 divisors (see below), whose sum is σ = 60063660306. Its totient is φ = 20021220100.

The previous prime is 40042440199. The next prime is 40042440209. The reversal of 40042440202 is 20204424004.

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., 36787623601 + 3254816601 = 191801^2 + 57051^2 .

It is not an unprimeable number, because it can be changed into a prime (40042440209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010610049 + ... + 10010610052.

Almost surely, 2^40042440202 is an apocalyptic number.

40042440202 is a deficient number, since it is larger than the sum of its proper divisors (20021220104).

40042440202 is a wasteful number, since it uses less digits than its factorization.

40042440202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20021220103.

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 40042440202 its reverse (20204424004), we get a palindrome (60246864206).

The spelling of 40042440202 in words is "forty billion, forty-two million, four hundred forty thousand, two hundred two".