1396742 has 4 divisors (see below), whose sum is σ = 2095116. Its totient is φ = 698370.

The previous prime is 1396723. The next prime is 1396751. The reversal of 1396742 is 2476931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2476931 = 31 ⋅79901.

It is a junction number, because it is equal to n+sod(n) for n = 1396699 and 1396708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349184 + ... + 349187.

It is an arithmetic number, because the mean of its divisors is an integer number (523779).

2^1396742 is an apocalyptic number.

1396742 is a deficient number, since it is larger than the sum of its proper divisors (698374).

1396742 is an equidigital number, since it uses as much as digits as its factorization.

1396742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698373.

The product of its digits is 9072, while the sum is 32.

The square root of 1396742 is about 1181.8383984285. The cubic root of 1396742 is about 111.7820485064.

The spelling of 1396742 in words is "one million, three hundred ninety-six thousand, seven hundred forty-two".