1287073841 has 8 divisors (see below), whose sum is σ = 1332847104. Its totient is φ = 1241566560.

The previous prime is 1287073793. The next prime is 1287073847. The reversal of 1287073841 is 1483707821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1287073841 - 2²² = 1282879537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1287073847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56621 + ... + 76026.

It is an arithmetic number, because the mean of its divisors is an integer number (166605888).

Almost surely, 2^1287073841 is an apocalyptic number.

It is an amenable number.

1287073841 is a deficient number, since it is larger than the sum of its proper divisors (45773263).

1287073841 is a wasteful number, since it uses less digits than its factorization.

1287073841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132991.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 1287073841 is about 35875.8113636472. The cubic root of 1287073841 is about 1087.7635148797.

The spelling of 1287073841 in words is "one billion, two hundred eighty-seven million, seventy-three thousand, eight hundred forty-one".