102005404 has 6 divisors (see below), whose sum is σ = 178509464. Its totient is φ = 51002700.

The previous prime is 102005399. The next prime is 102005413. The reversal of 102005404 is 404500201.

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 as a sum of consecutive naturals, namely, 12750672 + ... + 12750679.

Almost surely, 2^102005404 is an apocalyptic number.

It is an amenable number.

102005404 is a deficient number, since it is larger than the sum of its proper divisors (76504060).

102005404 is a wasteful number, since it uses less digits than its factorization.

102005404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25501355 (or 25501353 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 102005404 is about 10099.7724726847. The cubic root of 102005404 is about 467.2411240834.

Adding to 102005404 its reverse (404500201), we get a palindrome (506505605).

The spelling of 102005404 in words is "one hundred two million, five thousand, four hundred four".