102204406 has 4 divisors (see below), whose sum is σ = 153306612. Its totient is φ = 51102202.

The previous prime is 102204379. The next prime is 102204407. The reversal of 102204406 is 604402201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102204407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25551100 + ... + 25551103.

It is an arithmetic number, because the mean of its divisors is an integer number (38326653).

Almost surely, 2^102204406 is an apocalyptic number.

102204406 is a deficient number, since it is larger than the sum of its proper divisors (51102206).

102204406 is an equidigital number, since it uses as much as digits as its factorization.

102204406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51102205.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 102204406 is about 10109.6194784967. The cubic root of 102204406 is about 467.5447730861.

Adding to 102204406 its reverse (604402201), we get a palindrome (706606607).

The spelling of 102204406 in words is "one hundred two million, two hundred four thousand, four hundred six".