40021430045 has 8 divisors (see below), whose sum is σ = 50553385440. Its totient is φ = 30332031120.

The previous prime is 40021430041. The next prime is 40021430087. The reversal of 40021430045 is 54003412004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40021430045 - 2² = 40021430041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40021430045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40021430041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210639011 + ... + 210639200.

It is an arithmetic number, because the mean of its divisors is an integer number (6319173180).

Almost surely, 2^40021430045 is an apocalyptic number.

It is an amenable number.

40021430045 is a deficient number, since it is larger than the sum of its proper divisors (10531955395).

40021430045 is a wasteful number, since it uses less digits than its factorization.

40021430045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421278235.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 40021430045 its reverse (54003412004), we get a palindrome (94024842049).

The spelling of 40021430045 in words is "forty billion, twenty-one million, four hundred thirty thousand, forty-five".