1720102 has 4 divisors (see below), whose sum is σ = 2580156. Its totient is φ = 860050.

The previous prime is 1720063. The next prime is 1720109. The reversal of 1720102 is 2010271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2010271 = 41 ⋅49031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430024 + ... + 430027.

It is an arithmetic number, because the mean of its divisors is an integer number (645039).

2^1720102 is an apocalyptic number.

1720102 is a deficient number, since it is larger than the sum of its proper divisors (860054).

1720102 is an equidigital number, since it uses as much as digits as its factorization.

1720102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860053.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 1720102 is about 1311.5265914193. The cubic root of 1720102 is about 119.8168966778.

Adding to 1720102 its reverse (2010271), we get a palindrome (3730373).

The spelling of 1720102 in words is "one million, seven hundred twenty thousand, one hundred two".