102478005 has 48 divisors (see below), whose sum is σ = 204871680. Its totient is φ = 46416384.

The previous prime is 102477943. The next prime is 102478009. The reversal of 102478005 is 500874201.

It is a de Polignac number, because none of the positive numbers 2^k-102478005 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102478005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102478009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34156 + ... + 37034.

It is an arithmetic number, because the mean of its divisors is an integer number (4268160).

Almost surely, 2^102478005 is an apocalyptic number.

102478005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102478005 is a deficient number, since it is larger than the sum of its proper divisors (102393675).

102478005 is a wasteful number, since it uses less digits than its factorization.

102478005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010 (or 3007 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 102478005 is about 10123.1420517545. The cubic root of 102478005 is about 467.9616037971.

The spelling of 102478005 in words is "one hundred two million, four hundred seventy-eight thousand, five".