40321232412 has 24 divisors (see below), whose sum is σ = 94660075776. Its totient is φ = 13357953648.

The previous prime is 40321232401. The next prime is 40321232447. The reversal of 40321232412 is 21423212304.

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10305108 + ... + 10309019.

It is an arithmetic number, because the mean of its divisors is an integer number (3944169824).

Almost surely, 2^40321232412 is an apocalyptic number.

It is an amenable number.

40321232412 is an abundant number, since it is smaller than the sum of its proper divisors (54338843364).

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

40321232412 is a wasteful number, since it uses less digits than its factorization.

40321232412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20614297 (or 20614295 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 40321232412 its reverse (21423212304), we get a palindrome (61744444716).

The spelling of 40321232412 in words is "forty billion, three hundred twenty-one million, two hundred thirty-two thousand, four hundred twelve".