40206420732 has 24 divisors (see below), whose sum is σ = 93823112656. Its totient is φ = 13400978688.

The previous prime is 40206420731. The next prime is 40206420739. The reversal of 40206420732 is 23702460204.

It is a self number, because there is not a number n which added to its sum of digits gives 40206420732.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40206420731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5268 + ... + 283620.

Almost surely, 2^40206420732 is an apocalyptic number.

It is an amenable number.

40206420732 is an abundant number, since it is smaller than the sum of its proper divisors (53616691924).

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

40206420732 is a wasteful number, since it uses less digits than its factorization.

40206420732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290397 (or 290395 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

Adding to 40206420732 its reverse (23702460204), we get a palindrome (63908880936).

The spelling of 40206420732 in words is "forty billion, two hundred six million, four hundred twenty thousand, seven hundred thirty-two".