1020426003 has 12 divisors (see below), whose sum is σ = 1560651768. Its totient is φ = 640267200.

The previous prime is 1020425993. The next prime is 1020426007. The reversal of 1020426003 is 3006240201.

It is a happy number.

1020426003 is a `hidden beast` number, since 1 + 0 + 20 + 42 + 600 + 3 = 666.

It is not a de Polignac number, because 1020426003 - 2⁹ = 1020425491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020426007) 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 11 ways as a sum of consecutive naturals, for example, 3334573 + ... + 3334878.

It is an arithmetic number, because the mean of its divisors is an integer number (130054314).

Almost surely, 2^1020426003 is an apocalyptic number.

1020426003 is a deficient number, since it is larger than the sum of its proper divisors (540225765).

1020426003 is a wasteful number, since it uses less digits than its factorization.

1020426003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6669474 (or 6669471 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1020426003 is about 31944.1074847929. The cubic root of 1020426003 is about 1006.7628287132.

Adding to 1020426003 its reverse (3006240201), we get a palindrome (4026666204).

The spelling of 1020426003 in words is "one billion, twenty million, four hundred twenty-six thousand, three".