1286201087 has 4 divisors (see below), whose sum is σ = 1288486200. Its totient is φ = 1283915976.

The previous prime is 1286201053. The next prime is 1286201093. The reversal of 1286201087 is 7801026821.

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

It is a cyclic number.

It is not a de Polignac number, because 1286201087 - 2¹⁴ = 1286184703 is a prime.

It is a super-3 number, since 3×1286201087³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286201027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141712 + ... + 1142837.

It is an arithmetic number, because the mean of its divisors is an integer number (322121550).

Almost surely, 2^1286201087 is an apocalyptic number.

1286201087 is a deficient number, since it is larger than the sum of its proper divisors (2285113).

1286201087 is an equidigital number, since it uses as much as digits as its factorization.

1286201087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285112.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 1286201087 is about 35863.6457572289. The cubic root of 1286201087 is about 1087.5175915065.

The spelling of 1286201087 in words is "one billion, two hundred eighty-six million, two hundred one thousand, eighty-seven".