1287059412 has 24 divisors (see below), whose sum is σ = 3005515296. Its totient is φ = 428680288.

The previous prime is 1287059401. The next prime is 1287059429. The reversal of 1287059412 is 2149507821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26403 + ... + 57194.

It is an arithmetic number, because the mean of its divisors is an integer number (125229804).

Almost surely, 2^1287059412 is an apocalyptic number.

1287059412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1287059412 is an abundant number, since it is smaller than the sum of its proper divisors (1718455884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1287059412 is a wasteful number, since it uses less digits than its factorization.

1287059412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84887 (or 84885 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 1287059412 is about 35875.6102665864. The cubic root of 1287059412 is about 1087.7594500007.

The spelling of 1287059412 in words is "one billion, two hundred eighty-seven million, fifty-nine thousand, four hundred twelve".