1390342 has 4 divisors (see below), whose sum is σ = 2085516. Its totient is φ = 695170.

The previous prime is 1390339. The next prime is 1390343. The reversal of 1390342 is 2430931.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347584 + ... + 347587.

It is an arithmetic number, because the mean of its divisors is an integer number (521379).

2^1390342 is an apocalyptic number.

1390342 is a deficient number, since it is larger than the sum of its proper divisors (695174).

1390342 is an equidigital number, since it uses as much as digits as its factorization.

1390342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695173.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1390342 is about 1179.1276436417. The cubic root of 1390342 is about 111.6110552033.

The spelling of 1390342 in words is "one million, three hundred ninety thousand, three hundred forty-two".