102143005 has 4 divisors (see below), whose sum is σ = 122571612. Its totient is φ = 81714400.

The previous prime is 102143003. The next prime is 102143009. The reversal of 102143005 is 500341201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500341201 = 953 ⋅525017.

It can be written as a sum of positive squares in 2 ways, for example, as 11303044 + 90839961 = 3362^2 + 9531^2 .

It is not a de Polignac number, because 102143005 - 2¹ = 102143003 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 102143005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102143003) 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, 10214296 + ... + 10214305.

It is an arithmetic number, because the mean of its divisors is an integer number (30642903).

Almost surely, 2^102143005 is an apocalyptic number.

It is an amenable number.

102143005 is a deficient number, since it is larger than the sum of its proper divisors (20428607).

102143005 is an equidigital number, since it uses as much as digits as its factorization.

102143005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20428606.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 102143005 is about 10106.5822610811. The cubic root of 102143005 is about 467.4511258924.

Adding to 102143005 its reverse (500341201), we get a palindrome (602484206).

The spelling of 102143005 in words is "one hundred two million, one hundred forty-three thousand, five".