1287107127 has 24 divisors (see below), whose sum is σ = 1869920000. Its totient is φ = 853121808.

The previous prime is 1287107113. The next prime is 1287107131. The reversal of 1287107127 is 7217017821.

It is not a de Polignac number, because 1287107127 - 2⁷ = 1287106999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1287107091 and 1287107100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287106127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2079024 + ... + 2079642.

Almost surely, 2^1287107127 is an apocalyptic number.

1287107127 is a deficient number, since it is larger than the sum of its proper divisors (582812873).

1287107127 is a wasteful number, since it uses less digits than its factorization.

1287107127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587 (or 1584 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 36.

The square root of 1287107127 is about 35876.2752665323. The cubic root of 1287107127 is about 1087.7728919600.

The spelling of 1287107127 in words is "one billion, two hundred eighty-seven million, one hundred seven thousand, one hundred twenty-seven".