103243021 has 8 divisors (see below), whose sum is σ = 123122304. Its totient is φ = 84646320.

The previous prime is 103242917. The next prime is 103243027. The reversal of 103243021 is 120342301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103243021 - 2⁹ = 103242509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103242986 and 103243004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103243027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320470 + ... + 320791.

It is an arithmetic number, because the mean of its divisors is an integer number (15390288).

Almost surely, 2^103243021 is an apocalyptic number.

It is an amenable number.

103243021 is a deficient number, since it is larger than the sum of its proper divisors (19879283).

103243021 is an equidigital number, since it uses as much as digits as its factorization.

103243021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641291.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 103243021 is about 10160.8572965080. The cubic root of 103243021 is about 469.1231894836.

Adding to 103243021 its reverse (120342301), we get a palindrome (223585322).

The spelling of 103243021 in words is "one hundred three million, two hundred forty-three thousand, twenty-one".