1392238 has 4 divisors (see below), whose sum is σ = 2088360. Its totient is φ = 696118.

The previous prime is 1392233. The next prime is 1392253. The reversal of 1392238 is 8322931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8322931 = 19 ⋅438049.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348058 + ... + 348061.

It is an arithmetic number, because the mean of its divisors is an integer number (522090).

2^1392238 is an apocalyptic number.

1392238 is a deficient number, since it is larger than the sum of its proper divisors (696122).

1392238 is an equidigital number, since it uses as much as digits as its factorization.

1392238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696121.

The product of its digits is 2592, while the sum is 28.

The square root of 1392238 is about 1179.9313539355. The cubic root of 1392238 is about 111.6617665729.

The spelling of 1392238 in words is "one million, three hundred ninety-two thousand, two hundred thirty-eight".