1003121423 has 4 divisors (see below), whose sum is σ = 1024464480. Its totient is φ = 981778368.

The previous prime is 1003121419. The next prime is 1003121437. The reversal of 1003121423 is 3241213001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3241213001 = 13 ⋅249324077.

It is a cyclic number.

It is not a de Polignac number, because 1003121423 - 2² = 1003121419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003129423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10671458 + ... + 10671551.

It is an arithmetic number, because the mean of its divisors is an integer number (256116120).

Almost surely, 2^1003121423 is an apocalyptic number.

1003121423 is a deficient number, since it is larger than the sum of its proper divisors (21343057).

1003121423 is an equidigital number, since it uses as much as digits as its factorization.

1003121423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21343056.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1003121423 is about 31672.0921790778. The cubic root of 1003121423 is about 1001.0393936199.

Adding to 1003121423 its reverse (3241213001), we get a palindrome (4244334424).

The spelling of 1003121423 in words is "one billion, three million, one hundred twenty-one thousand, four hundred twenty-three".