1004123111 has 2 divisors, whose sum is σ = 1004123112. Its totient is φ = 1004123110.

The previous prime is 1004123089. The next prime is 1004123123. The reversal of 1004123111 is 1113214001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1004123111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004123011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502061555 + 502061556.

It is an arithmetic number, because the mean of its divisors is an integer number (502061556).

Almost surely, 2^1004123111 is an apocalyptic number.

1004123111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004123111 is an equidigital number, since it uses as much as digits as its factorization.

1004123111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1004123111 is about 31687.9016503144. The cubic root of 1004123111 is about 1001.3724857544.

Adding to 1004123111 its reverse (1113214001), we get a palindrome (2117337112).

The spelling of 1004123111 in words is "one billion, four million, one hundred twenty-three thousand, one hundred eleven".