1003426401 has 4 divisors (see below), whose sum is σ = 1337901872. Its totient is φ = 668950932.

The previous prime is 1003426397. The next prime is 1003426409. The reversal of 1003426401 is 1046243001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1046243001 = 3 ⋅348747667.

It is not a de Polignac number, because 1003426401 - 2² = 1003426397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1003426409) 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, 167237731 + ... + 167237736.

It is an arithmetic number, because the mean of its divisors is an integer number (334475468).

Almost surely, 2^1003426401 is an apocalyptic number.

It is an amenable number.

1003426401 is a deficient number, since it is larger than the sum of its proper divisors (334475471).

1003426401 is an equidigital number, since it uses as much as digits as its factorization.

1003426401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334475470.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1003426401 is about 31676.9064303950. The cubic root of 1003426401 is about 1001.1408316748.

Adding to 1003426401 its reverse (1046243001), we get a palindrome (2049669402).

The spelling of 1003426401 in words is "one billion, three million, four hundred twenty-six thousand, four hundred one".