1287102238 has 16 divisors (see below), whose sum is σ = 1972802304. Its totient is φ = 629516440.

The previous prime is 1287102203. The next prime is 1287102269. The reversal of 1287102238 is 8322017821.

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, 312573 + ... + 316663.

It is an arithmetic number, because the mean of its divisors is an integer number (123300144).

Almost surely, 2^1287102238 is an apocalyptic number.

1287102238 is a deficient number, since it is larger than the sum of its proper divisors (685700066).

1287102238 is a wasteful number, since it uses less digits than its factorization.

1287102238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7487.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 1287102238 is about 35876.2071295169. The cubic root of 1287102238 is about 1087.7715146780.

The spelling of 1287102238 in words is "one billion, two hundred eighty-seven million, one hundred two thousand, two hundred thirty-eight".