1287142662 has 16 divisors (see below), whose sum is σ = 2772307440. Its totient is φ = 396043872.

The previous prime is 1287142651. The next prime is 1287142711. The reversal of 1287142662 is 2662417821.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1287142662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8250837 + ... + 8250992.

It is an arithmetic number, because the mean of its divisors is an integer number (173269215).

Almost surely, 2^1287142662 is an apocalyptic number.

1287142662 is an abundant number, since it is smaller than the sum of its proper divisors (1485164778).

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

1287142662 is a wasteful number, since it uses less digits than its factorization.

1287142662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16501847.

The product of its digits is 64512, while the sum is 39.

The square root of 1287142662 is about 35876.7705068335. The cubic root of 1287142662 is about 1087.7829024332.

The spelling of 1287142662 in words is "one billion, two hundred eighty-seven million, one hundred forty-two thousand, six hundred sixty-two".