102406211 has 4 divisors (see below), whose sum is σ = 103848624. Its totient is φ = 100963800.

The previous prime is 102406141. The next prime is 102406247. The reversal of 102406211 is 112604201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102406211 - 2²⁶ = 35297347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102406211.

It is not an unprimeable number, because it can be changed into a prime (102406111) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 721100 + ... + 721241.

It is an arithmetic number, because the mean of its divisors is an integer number (25962156).

Almost surely, 2^102406211 is an apocalyptic number.

102406211 is a deficient number, since it is larger than the sum of its proper divisors (1442413).

102406211 is an equidigital number, since it uses as much as digits as its factorization.

102406211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442412.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 102406211 is about 10119.5953970502. The cubic root of 102406211 is about 467.8522968156.

The spelling of 102406211 in words is "one hundred two million, four hundred six thousand, two hundred eleven".