1668047342 has 16 divisors (see below), whose sum is σ = 2696252832. Its totient is φ = 769378080.

The previous prime is 1668047341. The next prime is 1668047363. The reversal of 1668047342 is 2437408661.

It is a self number, because there is not a number n which added to its sum of digits gives 1668047342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668047341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22967 + ... + 62157.

It is an arithmetic number, because the mean of its divisors is an integer number (168515802).

Almost surely, 2^1668047342 is an apocalyptic number.

1668047342 is a deficient number, since it is larger than the sum of its proper divisors (1028205490).

1668047342 is a wasteful number, since it uses less digits than its factorization.

1668047342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40843.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 1668047342 is about 40841.7352961404. The cubic root of 1668047342 is about 1185.9584054565.

The spelling of 1668047342 in words is "one billion, six hundred sixty-eight million, forty-seven thousand, three hundred forty-two".