502105431421 has 16 divisors (see below), whose sum is σ = 579996488448. Its totient is φ = 429590822400.

The previous prime is 502105431383. The next prime is 502105431427. The reversal of 502105431421 is 124134501205.

It is a cyclic number.

It is not a de Polignac number, because 502105431421 - 2¹⁵ = 502105398653 is a prime.

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 502105431421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502105431427) 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, 6294241 + ... + 6373513.

It is an arithmetic number, because the mean of its divisors is an integer number (36249780528).

Almost surely, 2^502105431421 is an apocalyptic number.

It is an amenable number.

502105431421 is a deficient number, since it is larger than the sum of its proper divisors (77891057027).

502105431421 is a wasteful number, since it uses less digits than its factorization.

502105431421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113172.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 502105431421 its reverse (124134501205), we get a palindrome (626239932626).

The spelling of 502105431421 in words is "five hundred two billion, one hundred five million, four hundred thirty-one thousand, four hundred twenty-one".