40143450421 has 8 divisors (see below), whose sum is σ = 40237239680. Its totient is φ = 40049708688.

The previous prime is 40143450397. The next prime is 40143450437. The reversal of 40143450421 is 12405434104.

40143450421 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 40143450421 - 2¹⁹ = 40142926133 is a prime.

It is a super-2 number, since 2×40143450421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40143450421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40143450461) 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, 2112400 + ... + 2131318.

It is an arithmetic number, because the mean of its divisors is an integer number (5029654960).

Almost surely, 2^40143450421 is an apocalyptic number.

It is an amenable number.

40143450421 is a deficient number, since it is larger than the sum of its proper divisors (93789259).

40143450421 is a wasteful number, since it uses less digits than its factorization.

40143450421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23763.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 40143450421 its reverse (12405434104), we get a palindrome (52548884525).

The spelling of 40143450421 in words is "forty billion, one hundred forty-three million, four hundred fifty thousand, four hundred twenty-one".