102405375 has 48 divisors (see below), whose sum is σ = 185878368. Its totient is φ = 54240000.

The previous prime is 102405371. The next prime is 102405377. The reversal of 102405375 is 573504201.

It is a happy number.

It is not a de Polignac number, because 102405375 - 2² = 102405371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102405371) 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, 255175 + ... + 255575.

It is an arithmetic number, because the mean of its divisors is an integer number (3872466).

Almost surely, 2^102405375 is an apocalyptic number.

102405375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102405375 is a deficient number, since it is larger than the sum of its proper divisors (83472993).

102405375 is a wasteful number, since it uses less digits than its factorization.

102405375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 102405375 is about 10119.5540909667. The cubic root of 102405375 is about 467.8510236976.

Adding to 102405375 its reverse (573504201), we get a palindrome (675909576).

The spelling of 102405375 in words is "one hundred two million, four hundred five thousand, three hundred seventy-five".