1421002103 has 4 divisors (see below), whose sum is σ = 1504590480. Its totient is φ = 1337413728.

The previous prime is 1421002091. The next prime is 1421002127. The reversal of 1421002103 is 3012001241.

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 1421002103 - 2¹⁰ = 1421001079 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 (1421002003) 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 in 3 ways as a sum of consecutive naturals, for example, 41794163 + ... + 41794196.

It is an arithmetic number, because the mean of its divisors is an integer number (376147620).

Almost surely, 2^1421002103 is an apocalyptic number.

1421002103 is a deficient number, since it is larger than the sum of its proper divisors (83588377).

1421002103 is an equidigital number, since it uses as much as digits as its factorization.

1421002103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83588376.

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

The square root of 1421002103 is about 37696.1815440238. The cubic root of 1421002103 is about 1124.2552049341.

Adding to 1421002103 its reverse (3012001241), we get a palindrome (4433003344).

The spelling of 1421002103 in words is "one billion, four hundred twenty-one million, two thousand, one hundred three".