1004131121 has 16 divisors (see below), whose sum is σ = 1164533760. Its totient is φ = 848055120.

The previous prime is 1004131111. The next prime is 1004131127. The reversal of 1004131121 is 1211314001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1004131121 is a prime.

It is a super-3 number, since 3×1004131121³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1004131096 and 1004131105.

It is not an unprimeable number, because it can be changed into a prime (1004131127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139550 + ... + 146568.

It is an arithmetic number, because the mean of its divisors is an integer number (72783360).

Almost surely, 2^1004131121 is an apocalyptic number.

It is an amenable number.

1004131121 is a deficient number, since it is larger than the sum of its proper divisors (160402639).

1004131121 is a wasteful number, since it uses less digits than its factorization.

1004131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7324.

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

The square root of 1004131121 is about 31688.0280389929. The cubic root of 1004131121 is about 1001.3751484333.

Adding to 1004131121 its reverse (1211314001), we get a palindrome (2215445122).

The spelling of 1004131121 in words is "one billion, four million, one hundred thirty-one thousand, one hundred twenty-one".