40230143121 has 16 divisors (see below), whose sum is σ = 62554160000. Its totient is φ = 22988652624.

The previous prime is 40230143113. The next prime is 40230143131. The reversal of 40230143121 is 12134103204.

40230143121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40230143121 - 2³ = 40230143113 is a prime.

It is a super-3 number, since 3×40230143121³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40230143131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19547146 + ... + 19549203.

It is an arithmetic number, because the mean of its divisors is an integer number (3909635000).

Almost surely, 2^40230143121 is an apocalyptic number.

It is an amenable number.

40230143121 is a deficient number, since it is larger than the sum of its proper divisors (22324016879).

40230143121 is an equidigital number, since it uses as much as digits as its factorization.

40230143121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39096373 (or 39096359 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 40230143121 its reverse (12134103204), we get a palindrome (52364246325).

The spelling of 40230143121 in words is "forty billion, two hundred thirty million, one hundred forty-three thousand, one hundred twenty-one".