102449 has 4 divisors (see below), whose sum is σ = 104436. Its totient is φ = 100464.

The previous prime is 102437. The next prime is 102451. The reversal of 102449 is 944201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71824 + 30625 = 268^2 + 175^2 .

It is a cyclic number.

It is not a de Polignac number, because 102449 - 2⁴ = 102433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102449.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102409) 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, 914 + ... + 1019.

It is an arithmetic number, because the mean of its divisors is an integer number (26109).

2¹⁰²⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

102449 is a deficient number, since it is larger than the sum of its proper divisors (1987).

102449 is an equidigital number, since it uses as much as digits as its factorization.

102449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 102449 is about 320.0765533431. The cubic root of 102449 is about 46.7917449584.

It can be divided in two parts, 1024 and 49, that multiplied together give a square (50176 = 224²).

The spelling of 102449 in words is "one hundred two thousand, four hundred forty-nine".