1920103 has 4 divisors (see below), whose sum is σ = 1923208. Its totient is φ = 1917000.

The previous prime is 1920101. The next prime is 1920143. The reversal of 1920103 is 3010291.

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 1920103 - 2¹ = 1920101 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 (1920101) 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, 273 + ... + 1978.

It is an arithmetic number, because the mean of its divisors is an integer number (480802).

2^1920103 is an apocalyptic number.

1920103 is a deficient number, since it is larger than the sum of its proper divisors (3105).

1920103 is an equidigital number, since it uses as much as digits as its factorization.

1920103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1920103 is about 1385.6778124802. The cubic root of 1920103 is about 124.2915227328.

Adding to 1920103 its reverse (3010291), we get a palindrome (4930394).

The spelling of 1920103 in words is "one million, nine hundred twenty thousand, one hundred three".