103543421 has 2 divisors, whose sum is σ = 103543422. Its totient is φ = 103543420.

The previous prime is 103543417. The next prime is 103543423. The reversal of 103543421 is 124345301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66504025 + 37039396 = 8155^2 + 6086^2 .

It is a cyclic number.

It is not a de Polignac number, because 103543421 - 2² = 103543417 is a prime.

It is a super-3 number, since 3×103543421³ (a number of 25 digits) contains 333 as substring.

Together with 103543423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103543423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51771710 + 51771711.

It is an arithmetic number, because the mean of its divisors is an integer number (51771711).

Almost surely, 2^103543421 is an apocalyptic number.

It is an amenable number.

103543421 is a deficient number, since it is larger than the sum of its proper divisors (1).

103543421 is an equidigital number, since it uses as much as digits as its factorization.

103543421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 103543421 is about 10175.6287766408. The cubic root of 103543421 is about 469.5777420700.

Adding to 103543421 its reverse (124345301), we get a palindrome (227888722).

The spelling of 103543421 in words is "one hundred three million, five hundred forty-three thousand, four hundred twenty-one".