102105378 has 24 divisors (see below), whose sum is σ = 221415168. Its totient is φ = 34006392.

The previous prime is 102105371. The next prime is 102105389. The reversal of 102105378 is 873501201.

It is not an unprimeable number, because it can be changed into a prime (102105371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37251 + ... + 39897.

It is an arithmetic number, because the mean of its divisors is an integer number (9225632).

Almost surely, 2^102105378 is an apocalyptic number.

102105378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

102105378 is an abundant number, since it is smaller than the sum of its proper divisors (119309790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102105378 is a wasteful number, since it uses less digits than its factorization.

102105378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4798 (or 4795 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 102105378 is about 10104.7205800062. The cubic root of 102105378 is about 467.3937196324.

Adding to 102105378 its reverse (873501201), we get a palindrome (975606579).

The spelling of 102105378 in words is "one hundred two million, one hundred five thousand, three hundred seventy-eight".