102722 has 4 divisors (see below), whose sum is σ = 154086. Its totient is φ = 51360.

The previous prime is 102701. The next prime is 102761. The reversal of 102722 is 227201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 227201 = 13 ⋅17477.

It can be written as a sum of positive squares in only one way, i.e., 101761 + 961 = 319^2 + 31^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102697 and 102706.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 102722.

It is an unprimeable number.

102722 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25679 + ... + 25682.

2¹⁰²⁷²² is an apocalyptic number.

102722 is a deficient number, since it is larger than the sum of its proper divisors (51364).

102722 is an equidigital number, since it uses as much as digits as its factorization.

102722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51363.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 102722 is about 320.5027300976. The cubic root of 102722 is about 46.8332707144.

Adding to 102722 its reverse (227201), we get a palindrome (329923).

The spelling of 102722 in words is "one hundred two thousand, seven hundred twenty-two", and thus it is an iban number.