1999321342 has 4 divisors (see below), whose sum is σ = 2998982016. Its totient is φ = 999660670.

The previous prime is 1999321333. The next prime is 1999321411. The reversal of 1999321342 is 2431239991.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499830334 + ... + 499830337.

It is an arithmetic number, because the mean of its divisors is an integer number (749745504).

Almost surely, 2^1999321342 is an apocalyptic number.

1999321342 is a deficient number, since it is larger than the sum of its proper divisors (999660674).

1999321342 is an equidigital number, since it uses as much as digits as its factorization.

1999321342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999660673.

The product of its digits is 104976, while the sum is 43.

The square root of 1999321342 is about 44713.7712791037. The cubic root of 1999321342 is about 1259.7785245227.

The spelling of 1999321342 in words is "one billion, nine hundred ninety-nine million, three hundred twenty-one thousand, three hundred forty-two".