1388842 has 24 divisors (see below), whose sum is σ = 2582496. Its totient is φ = 548496.

The previous prime is 1388837. The next prime is 1388873. The reversal of 1388842 is 2488831.

1388842 is nontrivially palindromic in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 1388798 and 1388807.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2073 + ... + 2659.

It is an arithmetic number, because the mean of its divisors is an integer number (107604).

2^1388842 is an apocalyptic number.

1388842 is a deficient number, since it is larger than the sum of its proper divisors (1193654).

1388842 is a wasteful number, since it uses less digits than its factorization.

1388842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 609 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 1388842 is about 1178.4914085389. The cubic root of 1388842 is about 111.5709027742.

The spelling of 1388842 in words is "one million, three hundred eighty-eight thousand, eight hundred forty-two".