1123001004 has 24 divisors (see below), whose sum is σ = 2758248640. Its totient is φ = 354631824.

The previous prime is 1123000999. The next prime is 1123001027. The reversal of 1123001004 is 4001003211.

It is a happy number.

It is a super-2 number, since 2×1123001004² = 2522262509970016032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2462494 + ... + 2462949.

Almost surely, 2^1123001004 is an apocalyptic number.

It is an amenable number.

1123001004 is an abundant number, since it is smaller than the sum of its proper divisors (1635247636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123001004 is a wasteful number, since it uses less digits than its factorization.

1123001004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925469 (or 4925467 counting only the distinct ones).

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

The square root of 1123001004 is about 33511.2071402986. The cubic root of 1123001004 is about 1039.4255345651.

Adding to 1123001004 its reverse (4001003211), we get a palindrome (5124004215).

The spelling of 1123001004 in words is "one billion, one hundred twenty-three million, one thousand, four".