100405418 has 8 divisors (see below), whose sum is σ = 150688512. Its totient is φ = 50175916.

The previous prime is 100405411. The next prime is 100405421. The reversal of 100405418 is 814504001.

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

It is a junction number, because it is equal to n+sod(n) for n = 100405393 and 100405402.

It is not an unprimeable number, because it can be changed into a prime (100405411) 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 3 ways as a sum of consecutive naturals, for example, 8330 + ... + 16437.

It is an arithmetic number, because the mean of its divisors is an integer number (18836064).

Almost surely, 2^100405418 is an apocalyptic number.

100405418 is a deficient number, since it is larger than the sum of its proper divisors (50283094).

100405418 is a wasteful number, since it uses less digits than its factorization.

100405418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26796.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 100405418 is about 10020.2503960729. The cubic root of 100405418 is about 464.7852988093.

Adding to 100405418 its reverse (814504001), we get a palindrome (914909419).

The spelling of 100405418 in words is "one hundred million, four hundred five thousand, four hundred eighteen".