1105400203 has 4 divisors (see below), whose sum is σ = 1117820520. Its totient is φ = 1092979888.

The previous prime is 1105400173. The next prime is 1105400213. The reversal of 1105400203 is 3020045011.

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 1105400203 - 2¹³ = 1105392011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105400213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6210025 + ... + 6210202.

It is an arithmetic number, because the mean of its divisors is an integer number (279455130).

Almost surely, 2^1105400203 is an apocalyptic number.

1105400203 is a deficient number, since it is larger than the sum of its proper divisors (12420317).

1105400203 is an equidigital number, since it uses as much as digits as its factorization.

1105400203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12420316.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1105400203 is about 33247.5593540338. The cubic root of 1105400203 is about 1033.9666077857.

Adding to 1105400203 its reverse (3020045011), we get a palindrome (4125445214).

The spelling of 1105400203 in words is "one billion, one hundred five million, four hundred thousand, two hundred three".