1105420203 has 40 divisors (see below), whose sum is σ = 1683646272. Its totient is φ = 722622384.

The previous prime is 1105420193. The next prime is 1105420207. The reversal of 1105420203 is 3020245011.

It is not a de Polignac number, because 1105420203 - 2¹⁶ = 1105354667 is a prime.

It is a super-2 number, since 2×1105420203² = 2443907650401122418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1105420207) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1882876 + ... + 1883462.

Almost surely, 2^1105420203 is an apocalyptic number.

1105420203 is a deficient number, since it is larger than the sum of its proper divisors (578226069).

1105420203 is an equidigital number, since it uses as much as digits as its factorization.

1105420203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1105420203 is about 33247.8601266307. The cubic root of 1105420203 is about 1033.9728435989.

Adding to 1105420203 its reverse (3020245011), we get a palindrome (4125665214).

The spelling of 1105420203 in words is "one billion, one hundred five million, four hundred twenty thousand, two hundred three".