40421212112 has 10 divisors (see below), whose sum is σ = 78316098498. Its totient is φ = 20210606048.

The previous prime is 40421212109. The next prime is 40421212133. The reversal of 40421212112 is 21121212404.

It can be written as a sum of positive squares in only one way, i.e., 39990400576 + 430811536 = 199976^2 + 20756^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1263162863 + ... + 1263162894.

Almost surely, 2^40421212112 is an apocalyptic number.

It is an amenable number.

40421212112 is a deficient number, since it is larger than the sum of its proper divisors (37894886386).

40421212112 is a wasteful number, since it uses less digits than its factorization.

40421212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526325765 (or 2526325759 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 40421212112 its reverse (21121212404), we get a palindrome (61542424516).

The spelling of 40421212112 in words is "forty billion, four hundred twenty-one million, two hundred twelve thousand, one hundred twelve".