421143013 has 2 divisors, whose sum is σ = 421143014. Its totient is φ = 421143012.

The previous prime is 421143011. The next prime is 421143031. The reversal of 421143013 is 310341124.

Together with next prime (421143031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398122209 + 23020804 = 19953^2 + 4798^2 .

It is a cyclic number.

It is not a de Polignac number, because 421143013 - 2¹ = 421143011 is a prime.

It is a super-2 number, since 2×421143013² = 354722874797436338, which contains 22 as substring.

Together with 421143011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421143011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210571506 + 210571507.

It is an arithmetic number, because the mean of its divisors is an integer number (210571507).

Almost surely, 2^421143013 is an apocalyptic number.

It is an amenable number.

421143013 is a deficient number, since it is larger than the sum of its proper divisors (1).

421143013 is an equidigital number, since it uses as much as digits as its factorization.

421143013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 421143013 is about 20521.7692463394. The cubic root of 421143013 is about 749.5659788085.

Adding to 421143013 its reverse (310341124), we get a palindrome (731484137).

The spelling of 421143013 in words is "four hundred twenty-one million, one hundred forty-three thousand, thirteen".