1042688 has 18 divisors (see below), whose sum is σ = 2081814. Its totient is φ = 521216.

The previous prime is 1042687. The next prime is 1042693. The reversal of 1042688 is 8862401.

It can be written as a sum of positive squares in only one way, i.e., 692224 + 350464 = 832^2 + 592^2 .

It is a nialpdrome in base 4 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1042688.

It is not an unprimeable number, because it can be changed into a prime (1042681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1781 + ... + 2292.

2^1042688 is an apocalyptic number.

It is an amenable number.

1042688 is a deficient number, since it is larger than the sum of its proper divisors (1039126).

1042688 is an frugal number, since it uses more digits than its factorization.

1042688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089 (or 4075 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1042688 is about 1021.1209526790. The cubic root of 1042688 is about 101.4031528676.

The spelling of 1042688 in words is "one million, forty-two thousand, six hundred eighty-eight".