40203310421 has 16 divisors (see below), whose sum is σ = 44530916400. Its totient is φ = 36123107328.

The previous prime is 40203310361. The next prime is 40203310447. The reversal of 40203310421 is 12401330204.

It can be written as a sum of positive squares in 8 ways, for example, as 167702500 + 40035607921 = 12950^2 + 200089^2 .

It is a cyclic number.

It is not a de Polignac number, because 40203310421 - 2³⁴ = 23023441237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40203310393 and 40203310402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40203312421) 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 15 ways as a sum of consecutive naturals, for example, 414260 + ... + 502013.

It is an arithmetic number, because the mean of its divisors is an integer number (2783182275).

Almost surely, 2^40203310421 is an apocalyptic number.

It is an amenable number.

40203310421 is a deficient number, since it is larger than the sum of its proper divisors (4327605979).

40203310421 is a wasteful number, since it uses less digits than its factorization.

40203310421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916408.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 40203310421 its reverse (12401330204), we get a palindrome (52604640625).

The spelling of 40203310421 in words is "forty billion, two hundred three million, three hundred ten thousand, four hundred twenty-one".