1287768201 has 8 divisors (see below), whose sum is σ = 1717246464. Its totient is φ = 858401040.

The previous prime is 1287768193. The next prime is 1287768211. The reversal of 1287768201 is 1028677821.

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

It is not a de Polignac number, because 1287768201 - 2³ = 1287768193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1287768211) 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, 4696 + ... + 50966.

It is an arithmetic number, because the mean of its divisors is an integer number (214655808).

Almost surely, 2^1287768201 is an apocalyptic number.

It is an amenable number.

1287768201 is a deficient number, since it is larger than the sum of its proper divisors (429478263).

1287768201 is an equidigital number, since it uses as much as digits as its factorization.

1287768201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55551.

The product of its (nonzero) digits is 75264, while the sum is 42.

The square root of 1287768201 is about 35885.4873312318. The cubic root of 1287768201 is about 1087.9590912499.

The spelling of 1287768201 in words is "one billion, two hundred eighty-seven million, seven hundred sixty-eight thousand, two hundred one".