1203121423 has 8 divisors (see below), whose sum is σ = 1385493120. Its totient is φ = 1023374040.

The previous prime is 1203121417. The next prime is 1203121453. The reversal of 1203121423 is 3241213021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1203121423 - 2²⁵ = 1169566991 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 1203121423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203121453) 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 7 ways as a sum of consecutive naturals, for example, 655093 + ... + 656926.

It is an arithmetic number, because the mean of its divisors is an integer number (173186640).

Almost surely, 2^1203121423 is an apocalyptic number.

1203121423 is a deficient number, since it is larger than the sum of its proper divisors (182371697).

1203121423 is a wasteful number, since it uses less digits than its factorization.

1203121423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312157.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1203121423 is about 34686.0407512878. The cubic root of 1203121423 is about 1063.5791622375.

Adding to 1203121423 its reverse (3241213021), we get a palindrome (4444334444).

The spelling of 1203121423 in words is "one billion, two hundred three million, one hundred twenty-one thousand, four hundred twenty-three".