40042123202 has 8 divisors (see below), whose sum is σ = 61686514236. Its totient is φ = 19479951792.

The previous prime is 40042123169. The next prime is 40042123207. The reversal of 40042123202 is 20232124004.

It can be written as a sum of positive squares in 2 ways, for example, as 32199072481 + 7843050721 = 179441^2 + 88561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40042123207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270554813 + ... + 270554960.

Almost surely, 2^40042123202 is an apocalyptic number.

40042123202 is a deficient number, since it is larger than the sum of its proper divisors (21644391034).

40042123202 is a wasteful number, since it uses less digits than its factorization.

40042123202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541109812.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 40042123202 its reverse (20232124004), we get a palindrome (60274247206).

The spelling of 40042123202 in words is "forty billion, forty-two million, one hundred twenty-three thousand, two hundred two".