40045420421 has 8 divisors (see below), whose sum is σ = 40982837280. Its totient is φ = 39108282192.

The previous prime is 40045420397. The next prime is 40045420489. The reversal of 40045420421 is 12402454004.

40045420421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40045420421 - 2¹⁸ = 40045158277 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 (40045420321) 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, 236735 + ... + 368963.

It is an arithmetic number, because the mean of its divisors is an integer number (5122854660).

Almost surely, 2^40045420421 is an apocalyptic number.

It is an amenable number.

40045420421 is a deficient number, since it is larger than the sum of its proper divisors (937416859).

40045420421 is a wasteful number, since it uses less digits than its factorization.

40045420421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139315.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 40045420421 its reverse (12402454004), we get a palindrome (52447874425).

The spelling of 40045420421 in words is "forty billion, forty-five million, four hundred twenty thousand, four hundred twenty-one".