1979342 has 4 divisors (see below), whose sum is σ = 2969016. Its totient is φ = 989670.

The previous prime is 1979339. The next prime is 1979347. The reversal of 1979342 is 2439791.

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 (1979347) 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, 494834 + ... + 494837.

It is an arithmetic number, because the mean of its divisors is an integer number (742254).

2^1979342 is an apocalyptic number.

1979342 is a deficient number, since it is larger than the sum of its proper divisors (989674).

1979342 is an equidigital number, since it uses as much as digits as its factorization.

1979342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989673.

The product of its digits is 13608, while the sum is 35.

The square root of 1979342 is about 1406.8908983997. The cubic root of 1979342 is about 125.5568120003.

The spelling of 1979342 in words is "one million, nine hundred seventy-nine thousand, three hundred forty-two".