1020000403 has 2 divisors, whose sum is σ = 1020000404. Its totient is φ = 1020000402.

The previous prime is 1020000367. The next prime is 1020000407. The reversal of 1020000403 is 3040000201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020000403 - 2⁹ = 1019999891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020000403.

It is not a weakly prime, because it can be changed into another prime (1020000407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510000201 + 510000202.

It is an arithmetic number, because the mean of its divisors is an integer number (510000202).

Almost surely, 2^1020000403 is an apocalyptic number.

1020000403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020000403 is an equidigital number, since it uses as much as digits as its factorization.

1020000403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 1020000403 is about 31937.4451545517. The cubic root of 1020000403 is about 1006.6228421316.

Adding to 1020000403 its reverse (3040000201), we get a palindrome (4060000604).

The spelling of 1020000403 in words is "one billion, twenty million, four hundred three", and thus it is an aban number.