40203434121 has 32 divisors (see below), whose sum is σ = 55319040000. Its totient is φ = 25962370560.

The previous prime is 40203434107. The next prime is 40203434129. The reversal of 40203434121 is 12143430204.

40203434121 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 40203434121 - 2⁹ = 40203433609 is a prime.

It is a super-2 number, since 2×40203434121² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40203434091 and 40203434100.

It is not an unprimeable number, because it can be changed into a prime (40203434129) 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, 2864880 + ... + 2878878.

It is an arithmetic number, because the mean of its divisors is an integer number (1728720000).

Almost surely, 2^40203434121 is an apocalyptic number.

It is an amenable number.

40203434121 is a deficient number, since it is larger than the sum of its proper divisors (15115605879).

40203434121 is a wasteful number, since it uses less digits than its factorization.

40203434121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14309.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 40203434121 its reverse (12143430204), we get a palindrome (52346864325).

The spelling of 40203434121 in words is "forty billion, two hundred three million, four hundred thirty-four thousand, one hundred twenty-one".