1200040103 has 2 divisors, whose sum is σ = 1200040104. Its totient is φ = 1200040102.

The previous prime is 1200040073. The next prime is 1200040109. The reversal of 1200040103 is 3010400021.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3010400021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200040103 - 2²⁴ = 1183262887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200040109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600020051 + 600020052.

It is an arithmetic number, because the mean of its divisors is an integer number (600020052).

Almost surely, 2^1200040103 is an apocalyptic number.

1200040103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200040103 is an equidigital number, since it uses as much as digits as its factorization.

1200040103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1200040103 is about 34641.5949834877. The cubic root of 1200040103 is about 1062.6704067720.

Adding to 1200040103 its reverse (3010400021), we get a palindrome (4210440124).

The spelling of 1200040103 in words is "one billion, two hundred million, forty thousand, one hundred three".