40042122212 has 6 divisors (see below), whose sum is σ = 70073713878. Its totient is φ = 20021061104.

The previous prime is 40042122199. The next prime is 40042122217. The reversal of 40042122212 is 21222124004.

It can be written as a sum of positive squares in only one way, i.e., 37831806016 + 2210316196 = 194504^2 + 47014^2 .

It is not an unprimeable number, because it can be changed into a prime (40042122217) 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 as a sum of consecutive naturals, namely, 5005265273 + ... + 5005265280.

It is an arithmetic number, because the mean of its divisors is an integer number (11678952313).

Almost surely, 2^40042122212 is an apocalyptic number.

It is an amenable number.

40042122212 is a deficient number, since it is larger than the sum of its proper divisors (30031591666).

40042122212 is a wasteful number, since it uses less digits than its factorization.

40042122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010530557 (or 10010530555 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 40042122212 its reverse (21222124004), we get a palindrome (61264246216).

The spelling of 40042122212 in words is "forty billion, forty-two million, one hundred twenty-two thousand, two hundred twelve".