40040423412 has 24 divisors (see below), whose sum is σ = 101921078112. Its totient is φ = 12133461600.

The previous prime is 40040423407. The next prime is 40040423431. The reversal of 40040423412 is 21432404004.

It is a happy number.

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 in 7 ways as a sum of consecutive naturals, for example, 151668139 + ... + 151668402.

It is an arithmetic number, because the mean of its divisors is an integer number (4246711588).

Almost surely, 2^40040423412 is an apocalyptic number.

It is an amenable number.

40040423412 is an abundant number, since it is smaller than the sum of its proper divisors (61880654700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40040423412 is a wasteful number, since it uses less digits than its factorization.

40040423412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303336559 (or 303336557 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 40040423412 its reverse (21432404004), we get a palindrome (61472827416).

The spelling of 40040423412 in words is "forty billion, forty million, four hundred twenty-three thousand, four hundred twelve".