103043021 has 2 divisors, whose sum is σ = 103043022. Its totient is φ = 103043020.

The previous prime is 103043009. The next prime is 103043027. The reversal of 103043021 is 120340301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85285225 + 17757796 = 9235^2 + 4214^2 .

It is a cyclic number.

It is not a de Polignac number, because 103043021 - 2¹⁸ = 102780877 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103042987 and 103043005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103043027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51521510 + 51521511.

It is an arithmetic number, because the mean of its divisors is an integer number (51521511).

Almost surely, 2^103043021 is an apocalyptic number.

It is an amenable number.

103043021 is a deficient number, since it is larger than the sum of its proper divisors (1).

103043021 is an equidigital number, since it uses as much as digits as its factorization.

103043021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 103043021 is about 10151.0108363650. The cubic root of 103043021 is about 468.8200687908.

Adding to 103043021 its reverse (120340301), we get a palindrome (223383322).

The spelling of 103043021 in words is "one hundred three million, forty-three thousand, twenty-one".