103443421 has 2 divisors, whose sum is σ = 103443422. Its totient is φ = 103443420.

The previous prime is 103443401. The next prime is 103443433. The reversal of 103443421 is 124344301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56040196 + 47403225 = 7486^2 + 6885^2 .

It is an emirp because it is prime and its reverse (124344301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103443421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103443392 and 103443401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103443401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51721710 + 51721711.

It is an arithmetic number, because the mean of its divisors is an integer number (51721711).

Almost surely, 2^103443421 is an apocalyptic number.

It is an amenable number.

103443421 is a deficient number, since it is larger than the sum of its proper divisors (1).

103443421 is an equidigital number, since it uses as much as digits as its factorization.

103443421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 103443421 is about 10170.7138884151. The cubic root of 103443421 is about 469.4265240309.

Adding to 103443421 its reverse (124344301), we get a palindrome (227787722).

The spelling of 103443421 in words is "one hundred three million, four hundred forty-three thousand, four hundred twenty-one".