1203123043 has 4 divisors (see below), whose sum is σ = 1235639920. Its totient is φ = 1170606168.

The previous prime is 1203123041. The next prime is 1203123071. The reversal of 1203123043 is 3403213021.

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 1203123043 - 2¹ = 1203123041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1203123043.

It is not an unprimeable number, because it can be changed into a prime (1203123041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16258383 + ... + 16258456.

It is an arithmetic number, because the mean of its divisors is an integer number (308909980).

Almost surely, 2^1203123043 is an apocalyptic number.

1203123043 is a deficient number, since it is larger than the sum of its proper divisors (32516877).

1203123043 is an equidigital number, since it uses as much as digits as its factorization.

1203123043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32516876.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1203123043 is about 34686.0641036137. The cubic root of 1203123043 is about 1063.5796396062.

Adding to 1203123043 its reverse (3403213021), we get a palindrome (4606336064).

The spelling of 1203123043 in words is "one billion, two hundred three million, one hundred twenty-three thousand, forty-three".