102320405 has 16 divisors (see below), whose sum is σ = 135648000. Its totient is φ = 73469760.

The previous prime is 102320389. The next prime is 102320411. The reversal of 102320405 is 504023201.

It is not a de Polignac number, because 102320405 - 2⁴ = 102320389 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7430 + ... + 16119.

It is an arithmetic number, because the mean of its divisors is an integer number (8478000).

Almost surely, 2^102320405 is an apocalyptic number.

It is an amenable number.

102320405 is a deficient number, since it is larger than the sum of its proper divisors (33327595).

102320405 is a wasteful number, since it uses less digits than its factorization.

102320405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23644.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 102320405 is about 10115.3549122114. The cubic root of 102320405 is about 467.7215894059.

Adding to 102320405 its reverse (504023201), we get a palindrome (606343606).

The spelling of 102320405 in words is "one hundred two million, three hundred twenty thousand, four hundred five".