1287126364 has 12 divisors (see below), whose sum is σ = 2283327424. Its totient is φ = 634747104.

The previous prime is 1287126361. The next prime is 1287126377. The reversal of 1287126364 is 4636217821.

It is a super-3 number, since 3×1287126364³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287126361) 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, 2203692 + ... + 2204275.

Almost surely, 2^1287126364 is an apocalyptic number.

It is an amenable number.

1287126364 is a deficient number, since it is larger than the sum of its proper divisors (996201060).

1287126364 is a wasteful number, since it uses less digits than its factorization.

1287126364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408044 (or 4408042 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 1287126364 is about 35876.5433674985. The cubic root of 1287126364 is about 1087.7783111885.

The spelling of 1287126364 in words is "one billion, two hundred eighty-seven million, one hundred twenty-six thousand, three hundred sixty-four".