102124404 has 18 divisors (see below), whose sum is σ = 258147890. Its totient is φ = 34041456.

The previous prime is 102124381. The next prime is 102124409. The reversal of 102124404 is 404421201.

102124404 is a `hidden beast` number, since 10 + 212 + 440 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 97061904 + 5062500 = 9852^2 + 2250^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102124409) 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 5 ways as a sum of consecutive naturals, for example, 1418359 + ... + 1418430.

Almost surely, 2^102124404 is an apocalyptic number.

It is an amenable number.

102124404 is an abundant number, since it is smaller than the sum of its proper divisors (156023486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102124404 is a wasteful number, since it uses less digits than its factorization.

102124404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836799 (or 2836794 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 102124404 is about 10105.6619773274. The cubic root of 102124404 is about 467.4227487290.

Adding to 102124404 its reverse (404421201), we get a palindrome (506545605).

It can be divided in two parts, 1021 and 24404, that added together give a triangular number (25425 = T₂₂₅).

The spelling of 102124404 in words is "one hundred two million, one hundred twenty-four thousand, four hundred four".