102421103 has 4 divisors (see below), whose sum is σ = 102456648. Its totient is φ = 102385560.

The previous prime is 102421079. The next prime is 102421133. The reversal of 102421103 is 301124201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102421103 - 2²⁰ = 101372527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102421133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13028 + ... + 19353.

It is an arithmetic number, because the mean of its divisors is an integer number (25614162).

Almost surely, 2^102421103 is an apocalyptic number.

102421103 is a deficient number, since it is larger than the sum of its proper divisors (35545).

102421103 is an equidigital number, since it uses as much as digits as its factorization.

102421103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35544.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 102421103 is about 10120.3311704707. The cubic root of 102421103 is about 467.8749742120.

Adding to 102421103 its reverse (301124201), we get a palindrome (403545304).

The spelling of 102421103 in words is "one hundred two million, four hundred twenty-one thousand, one hundred three".