1385242 has 4 divisors (see below), whose sum is σ = 2077866. Its totient is φ = 692620.

The previous prime is 1385213. The next prime is 1385273. The reversal of 1385242 is 2425831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2425831 = 37 ⋅65563.

It can be written as a sum of positive squares in only one way, i.e., 793881 + 591361 = 891^2 + 769^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346309 + ... + 346312.

2^1385242 is an apocalyptic number.

1385242 is a deficient number, since it is larger than the sum of its proper divisors (692624).

1385242 is an equidigital number, since it uses as much as digits as its factorization.

1385242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692623.

The product of its digits is 1920, while the sum is 25.

The square root of 1385242 is about 1176.9630410510. The cubic root of 1385242 is about 111.4744188467.

The spelling of 1385242 in words is "one million, three hundred eighty-five thousand, two hundred forty-two".