1720661260142 has 8 divisors (see below), whose sum is σ = 2815627516632. Its totient is φ = 782118754600.

The previous prime is 1720661260141. The next prime is 1720661260159. The reversal of 1720661260142 is 2410621660271.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1720661260096 and 1720661260105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720661260141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39105937709 + ... + 39105937752.

It is an arithmetic number, because the mean of its divisors is an integer number (351953439579).

Almost surely, 2^{1720661260142} is an apocalyptic number.

1720661260142 is a deficient number, since it is larger than the sum of its proper divisors (1094966256490).

1720661260142 is a wasteful number, since it uses less digits than its factorization.

1720661260142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78211875474.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 1720661260142 in words is "one trillion, seven hundred twenty billion, six hundred sixty-one million, two hundred sixty thousand, one hundred forty-two".