1004121143 has 16 divisors (see below), whose sum is σ = 1085676480. Its totient is φ = 925833216.

The previous prime is 1004121109. The next prime is 1004121163. The reversal of 1004121143 is 3411214001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1004121143 - 2¹⁰ = 1004120119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004121103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811121 + ... + 812357.

It is an arithmetic number, because the mean of its divisors is an integer number (67854780).

Almost surely, 2^1004121143 is an apocalyptic number.

1004121143 is a deficient number, since it is larger than the sum of its proper divisors (81555337).

1004121143 is a wasteful number, since it uses less digits than its factorization.

1004121143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1004121143 is about 31687.8705974384. The cubic root of 1004121143 is about 1001.3718315510.

Adding to 1004121143 its reverse (3411214001), we get a palindrome (4415335144).

The spelling of 1004121143 in words is "one billion, four million, one hundred twenty-one thousand, one hundred forty-three".