102406539 has 8 divisors (see below), whose sum is σ = 137446912. Its totient is φ = 67818600.

The previous prime is 102406531. The next prime is 102406553. The reversal of 102406539 is 935604201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102406539 - 2³ = 102406531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102406531) 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 7 ways as a sum of consecutive naturals, for example, 112579 + ... + 113484.

It is an arithmetic number, because the mean of its divisors is an integer number (17180864).

Almost surely, 2^102406539 is an apocalyptic number.

102406539 is a deficient number, since it is larger than the sum of its proper divisors (35040373).

102406539 is a wasteful number, since it uses less digits than its factorization.

102406539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226217.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 102406539 is about 10119.6116032188. The cubic root of 102406539 is about 467.8527963146.

The spelling of 102406539 in words is "one hundred two million, four hundred six thousand, five hundred thirty-nine".