40431042421 has 32 divisors (see below), whose sum is σ = 54379807488. Its totient is φ = 29091978240.

The previous prime is 40431042383. The next prime is 40431042469. The reversal of 40431042421 is 12424013404.

It is a cyclic number.

It is not a de Polignac number, because 40431042421 - 2¹⁵ = 40431009653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431043421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222010 + ... + 360763.

It is an arithmetic number, because the mean of its divisors is an integer number (1699368984).

Almost surely, 2^40431042421 is an apocalyptic number.

It is an amenable number.

40431042421 is a deficient number, since it is larger than the sum of its proper divisors (13948765067).

40431042421 is a wasteful number, since it uses less digits than its factorization.

40431042421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582861.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 40431042421 its reverse (12424013404), we get a palindrome (52855055825).

The spelling of 40431042421 in words is "forty billion, four hundred thirty-one million, forty-two thousand, four hundred twenty-one".