102409005 has 32 divisors (see below), whose sum is σ = 173145600. Its totient is φ = 51602432.

The previous prime is 102409001. The next prime is 102409009. The reversal of 102409005 is 500904201.

It is an interprime number because it is at equal distance from previous prime (102409001) and next prime (102409009).

It is a cyclic number.

It is not a de Polignac number, because 102409005 - 2² = 102409001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102409001) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 17941 + ... + 22949.

It is an arithmetic number, because the mean of its divisors is an integer number (5410800).

Almost surely, 2^102409005 is an apocalyptic number.

102409005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102409005 is a deficient number, since it is larger than the sum of its proper divisors (70736595).

102409005 is a wasteful number, since it uses less digits than its factorization.

102409005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5093.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 102409005 is about 10119.7334451062. The cubic root of 102409005 is about 467.8565516599.

The spelling of 102409005 in words is "one hundred two million, four hundred nine thousand, five".