1004021426 has 12 divisors (see below), whose sum is σ = 1538763918. Its totient is φ = 491327472.

The previous prime is 1004021423. The next prime is 1004021449. The reversal of 1004021426 is 6241204001.

It can be written as a sum of positive squares in only one way, i.e., 782041225 + 221980201 = 27965^2 + 14899^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1004021398 and 1004021407.

It is not an unprimeable number, because it can be changed into a prime (1004021423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109211 + ... + 118046.

Almost surely, 2^1004021426 is an apocalyptic number.

1004021426 is a deficient number, since it is larger than the sum of its proper divisors (534742492).

1004021426 is an equidigital number, since it uses as much as digits as its factorization.

1004021426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227353 (or 227306 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1004021426 is about 31686.2971329879. The cubic root of 1004021426 is about 1001.3386824629.

Adding to 1004021426 its reverse (6241204001), we get a palindrome (7245225427).

The spelling of 1004021426 in words is "one billion, four million, twenty-one thousand, four hundred twenty-six".