102078005 has 8 divisors (see below), whose sum is σ = 125804472. Its totient is φ = 79455168.

The previous prime is 102077993. The next prime is 102078019. The reversal of 102078005 is 500870201.

It can be written as a sum of positive squares in 4 ways, for example, as 9186961 + 92891044 = 3031^2 + 9638^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 102078005 - 2¹⁰ = 102076981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275702 + ... + 276071.

It is an arithmetic number, because the mean of its divisors is an integer number (15725559).

Almost surely, 2^102078005 is an apocalyptic number.

It is an amenable number.

102078005 is a deficient number, since it is larger than the sum of its proper divisors (23726467).

102078005 is an equidigital number, since it uses as much as digits as its factorization.

102078005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551815.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 102078005 is about 10103.3660232618. The cubic root of 102078005 is about 467.3519486960.

The spelling of 102078005 in words is "one hundred two million, seventy-eight thousand, five".