102144505 has 8 divisors (see below), whose sum is σ = 124300224. Its totient is φ = 80564400.

The previous prime is 102144503. The next prime is 102144509. The reversal of 102144505 is 505441201.

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

It is not a de Polignac number, because 102144505 - 2¹ = 102144503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102144503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143511 + ... + 144220.

It is an arithmetic number, because the mean of its divisors is an integer number (15537528).

Almost surely, 2^102144505 is an apocalyptic number.

It is an amenable number.

102144505 is a deficient number, since it is larger than the sum of its proper divisors (22155719).

102144505 is an equidigital number, since it uses as much as digits as its factorization.

102144505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287807.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 102144505 is about 10106.6564698717. The cubic root of 102144505 is about 467.4534141002.

Adding to 102144505 its reverse (505441201), we get a palindrome (607585706).

The spelling of 102144505 in words is "one hundred two million, one hundred forty-four thousand, five hundred five".