1389242 has 8 divisors (see below), whose sum is σ = 2193600. Its totient is φ = 658044.

The previous prime is 1389233. The next prime is 1389251. The reversal of 1389242 is 2429831.

It is an interprime number because it is at equal distance from previous prime (1389233) and next prime (1389251).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18242 + ... + 18317.

It is an arithmetic number, because the mean of its divisors is an integer number (274200).

2^1389242 is an apocalyptic number.

1389242 is a deficient number, since it is larger than the sum of its proper divisors (804358).

1389242 is a wasteful number, since it uses less digits than its factorization.

1389242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36580.

The product of its digits is 3456, while the sum is 29.

The square root of 1389242 is about 1178.6611048134. The cubic root of 1389242 is about 111.5816129143.

The spelling of 1389242 in words is "one million, three hundred eighty-nine thousand, two hundred forty-two".