1004002123 has 4 divisors (see below), whose sum is σ = 1056844360. Its totient is φ = 951159888.

The previous prime is 1004002117. The next prime is 1004002151. The reversal of 1004002123 is 3212004001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3212004001 = 41 ⋅78341561.

It is a cyclic number.

It is not a de Polignac number, because 1004002123 - 2²⁵ = 970447691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1004002193) 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, 26421090 + ... + 26421127.

It is an arithmetic number, because the mean of its divisors is an integer number (264211090).

Almost surely, 2^1004002123 is an apocalyptic number.

1004002123 is a deficient number, since it is larger than the sum of its proper divisors (52842237).

1004002123 is an equidigital number, since it uses as much as digits as its factorization.

1004002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52842236.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1004002123 is about 31685.9925361350. The cubic root of 1004002123 is about 1001.3322652810.

Adding to 1004002123 its reverse (3212004001), we get a palindrome (4216006124).

The spelling of 1004002123 in words is "one billion, four million, two thousand, one hundred twenty-three".