1720328142342 has 32 divisors (see below), whose sum is σ = 3623803805952. Its totient is φ = 543384151904.

The previous prime is 1720328142317. The next prime is 1720328142383. The reversal of 1720328142342 is 2432418230271.

It is a super-2 number, since 2×1720328142342² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1720328142342.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 58238253 + ... + 58267784.

It is an arithmetic number, because the mean of its divisors is an integer number (113243868936).

Almost surely, 2^{1720328142342} is an apocalyptic number.

1720328142342 is an abundant number, since it is smaller than the sum of its proper divisors (1903475663610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1720328142342 is a wasteful number, since it uses less digits than its factorization.

1720328142342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116506172.

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 1720328142342 in words is "one trillion, seven hundred twenty billion, three hundred twenty-eight million, one hundred forty-two thousand, three hundred forty-two".