1003012421 has 4 divisors (see below), whose sum is σ = 1015096992. Its totient is φ = 990927852.

The previous prime is 1003012399. The next prime is 1003012429. The reversal of 1003012421 is 1242103001.

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.

It is a cyclic number.

It is not a de Polignac number, because 1003012421 - 2¹⁰ = 1003011397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1003012396 and 1003012405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003012429) 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, 6042161 + ... + 6042326.

It is an arithmetic number, because the mean of its divisors is an integer number (253774248).

Almost surely, 2^1003012421 is an apocalyptic number.

It is an amenable number.

1003012421 is a deficient number, since it is larger than the sum of its proper divisors (12084571).

1003012421 is an equidigital number, since it uses as much as digits as its factorization.

1003012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12084570.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1003012421 is about 31670.3713429445. The cubic root of 1003012421 is about 1001.0031337196.

Adding to 1003012421 its reverse (1242103001), we get a palindrome (2245115422).

The spelling of 1003012421 in words is "one billion, three million, twelve thousand, four hundred twenty-one".