40121431432 has 16 divisors (see below), whose sum is σ = 75274695900. Its totient is φ = 20048179200.

The previous prime is 40121431429. The next prime is 40121431463. The reversal of 40121431432 is 23413412104.

40121431432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 40101664516 + 19766916 = 200254^2 + 4446^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40121431397 and 40121431406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1553457 + ... + 1579072.

Almost surely, 2^40121431432 is an apocalyptic number.

It is an amenable number.

40121431432 is a deficient number, since it is larger than the sum of its proper divisors (35153264468).

40121431432 is a wasteful number, since it uses less digits than its factorization.

40121431432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3134136 (or 3134132 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 40121431432 its reverse (23413412104), we get a palindrome (63534843536).

The spelling of 40121431432 in words is "forty billion, one hundred twenty-one million, four hundred thirty-one thousand, four hundred thirty-two".