1720334752242 has 64 divisors (see below), whose sum is σ = 3477602419200. Its totient is φ = 567327815424.

The previous prime is 1720334752223. The next prime is 1720334752247. The reversal of 1720334752242 is 2422574330271.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1720334752194 and 1720334752203.

It is not an unprimeable number, because it can be changed into a prime (1720334752247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197758009 + ... + 197766707.

It is an arithmetic number, because the mean of its divisors is an integer number (54337537800).

Almost surely, 2^{1720334752242} is an apocalyptic number.

1720334752242 is an abundant number, since it is smaller than the sum of its proper divisors (1757267666958).

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

1720334752242 is a wasteful number, since it uses less digits than its factorization.

1720334752242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9767.

The product of its (nonzero) digits is 564480, while the sum is 42.

The spelling of 1720334752242 in words is "one trillion, seven hundred twenty billion, three hundred thirty-four million, seven hundred fifty-two thousand, two hundred forty-two".