1004120403 has 16 divisors (see below), whose sum is σ = 1572888576. Its totient is φ = 561745440.

The previous prime is 1004120363. The next prime is 1004120443. The reversal of 1004120403 is 3040214001.

It is an interprime number because it is at equal distance from previous prime (1004120363) and next prime (1004120443).

It is not a de Polignac number, because 1004120403 - 2¹⁰ = 1004119379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1004120443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1169875 + ... + 1170732.

It is an arithmetic number, because the mean of its divisors is an integer number (98305536).

Almost surely, 2^1004120403 is an apocalyptic number.

1004120403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1004120403 is a deficient number, since it is larger than the sum of its proper divisors (568768173).

1004120403 is a wasteful number, since it uses less digits than its factorization.

1004120403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340634.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1004120403 is about 31687.8589210442. The cubic root of 1004120403 is about 1001.3715855596.

Adding to 1004120403 its reverse (3040214001), we get a palindrome (4044334404).

The spelling of 1004120403 in words is "one billion, four million, one hundred twenty thousand, four hundred three".