502142034421 has 2 divisors, whose sum is σ = 502142034422. Its totient is φ = 502142034420.

The previous prime is 502142034419. The next prime is 502142034467. The reversal of 502142034421 is 124430241205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 460694775025 + 41447259396 = 678745^2 + 203586^2 .

It is a cyclic number.

It is not a de Polignac number, because 502142034421 - 2¹ = 502142034419 is a prime.

It is a super-3 number, since 3×502142034421³ (a number of 36 digits) contains 333 as substring.

Together with 502142034419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 502142034421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (502142034221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251071017210 + 251071017211.

It is an arithmetic number, because the mean of its divisors is an integer number (251071017211).

Almost surely, 2^502142034421 is an apocalyptic number.

It is an amenable number.

502142034421 is a deficient number, since it is larger than the sum of its proper divisors (1).

502142034421 is an equidigital number, since it uses as much as digits as its factorization.

502142034421 is an evil number, because the sum of its binary digits is even.

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

Adding to 502142034421 its reverse (124430241205), we get a palindrome (626572275626).

The spelling of 502142034421 in words is "five hundred two billion, one hundred forty-two million, thirty-four thousand, four hundred twenty-one".