1421103 has 8 divisors (see below), whose sum is σ = 1902208. Its totient is φ = 943704.

The previous prime is 1421099. The next prime is 1421113. The reversal of 1421103 is 3011241.

It is a happy number.

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

It is not a de Polignac number, because 1421103 - 2² = 1421099 is a prime.

It is an Ulam number.

It is a Duffinian number.

1421103 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421113) 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, 150 + ... + 1692.

It is an arithmetic number, because the mean of its divisors is an integer number (237776).

2^1421103 is an apocalyptic number.

1421103 is a deficient number, since it is larger than the sum of its proper divisors (481105).

1421103 is a wasteful number, since it uses less digits than its factorization.

1421103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1421103 is about 1192.1002474624. The cubic root of 1421103 is about 112.4281813221.

Adding to 1421103 its reverse (3011241), we get a palindrome (4432344).

The spelling of 1421103 in words is "one million, four hundred twenty-one thousand, one hundred three".