1004123001 has 64 divisors (see below), whose sum is σ = 1660538880. Its totient is φ = 527005440.

The previous prime is 1004122997. The next prime is 1004123011. The reversal of 1004123001 is 1003214001.

It is a happy number.

It is not a de Polignac number, because 1004123001 - 2² = 1004122997 is a prime.

It is a super-2 number, since 2×1004123001² = 2016526002274492002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1004123011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2177911 + ... + 2178371.

It is an arithmetic number, because the mean of its divisors is an integer number (25945920).

Almost surely, 2^1004123001 is an apocalyptic number.

It is an amenable number.

1004123001 is a deficient number, since it is larger than the sum of its proper divisors (656415879).

1004123001 is a wasteful number, since it uses less digits than its factorization.

1004123001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1004123001 is about 31687.8999146362. The cubic root of 1004123001 is about 1001.3724491882.

Adding to 1004123001 its reverse (1003214001), we get a palindrome (2007337002).

The spelling of 1004123001 in words is "one billion, four million, one hundred twenty-three thousand, one".