1290816041 has 4 divisors (see below), whose sum is σ = 1302658500. Its totient is φ = 1278973584.

The previous prime is 1290816029. The next prime is 1290816049. The reversal of 1290816041 is 1406180921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 360810025 + 930006016 = 18995^2 + 30496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1290816041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1290815989 and 1290816007.

It is not an unprimeable number, because it can be changed into a prime (1290816049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5921066 + ... + 5921283.

It is an arithmetic number, because the mean of its divisors is an integer number (325664625).

Almost surely, 2^1290816041 is an apocalyptic number.

It is an amenable number.

1290816041 is a deficient number, since it is larger than the sum of its proper divisors (11842459).

1290816041 is a wasteful number, since it uses less digits than its factorization.

1290816041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11842458.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1290816041 is about 35927.9284262257. The cubic root of 1290816041 is about 1088.8167281723.

Adding to 1290816041 its reverse (1406180921), we get a palindrome (2696996962).

The spelling of 1290816041 in words is "one billion, two hundred ninety million, eight hundred sixteen thousand, forty-one".