40421332432 has 40 divisors (see below), whose sum is σ = 84405958784. Its totient is φ = 18641556864.

The previous prime is 40421332387. The next prime is 40421332447. The reversal of 40421332432 is 23423312404.

It is a self number, because there is not a number n which added to its sum of digits gives 40421332432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196453 + ... + 345595.

Almost surely, 2^40421332432 is an apocalyptic number.

It is an amenable number.

40421332432 is an abundant number, since it is smaller than the sum of its proper divisors (43984626352).

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

40421332432 is a wasteful number, since it uses less digits than its factorization.

40421332432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150467 (or 150461 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 40421332432 its reverse (23423312404), we get a palindrome (63844644836).

It can be divided in two parts, 404213 and 32432, that added together give a triangular number (436645 = T₉₃₄).

The spelling of 40421332432 in words is "forty billion, four hundred twenty-one million, three hundred thirty-two thousand, four hundred thirty-two".