102342405 has 48 divisors (see below), whose sum is σ = 181944000. Its totient is φ = 49082880.

The previous prime is 102342353. The next prime is 102342413. The reversal of 102342405 is 504243201.

It is not a de Polignac number, because 102342405 - 2¹³ = 102334213 is a prime.

It is a super-2 number, since 2×102342405² = 20947935722368050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 204846 + ... + 205344.

It is an arithmetic number, because the mean of its divisors is an integer number (3790500).

Almost surely, 2^102342405 is an apocalyptic number.

102342405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102342405 is a deficient number, since it is larger than the sum of its proper divisors (79601595).

102342405 is a wasteful number, since it uses less digits than its factorization.

102342405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 102342405 is about 10116.4423094287. The cubic root of 102342405 is about 467.7551087467.

Adding to 102342405 its reverse (504243201), we get a palindrome (606585606).

The spelling of 102342405 in words is "one hundred two million, three hundred forty-two thousand, four hundred five".