102385540 has 12 divisors (see below), whose sum is σ = 215009676. Its totient is φ = 40954208.

The previous prime is 102385531. The next prime is 102385541. The reversal of 102385540 is 45583201.

It can be written as a sum of positive squares in 2 ways, for example, as 29419776 + 72965764 = 5424^2 + 8542^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102385499 and 102385508.

It is not an unprimeable number, because it can be changed into a prime (102385541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2559619 + ... + 2559658.

It is an arithmetic number, because the mean of its divisors is an integer number (17917473).

Almost surely, 2^102385540 is an apocalyptic number.

102385540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102385540 is an abundant number, since it is smaller than the sum of its proper divisors (112624136).

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

102385540 is a wasteful number, since it uses less digits than its factorization.

102385540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5119286 (or 5119284 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 102385540 is about 10118.5740102052. The cubic root of 102385540 is about 467.8208155688.

The spelling of 102385540 in words is "one hundred two million, three hundred eighty-five thousand, five hundred forty".