108100421 has 16 divisors (see below), whose sum is σ = 130437888. Its totient is φ = 88257600.

The previous prime is 108100397. The next prime is 108100451. The reversal of 108100421 is 124001801.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108100421 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 108100421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108100451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4925 + ... + 15506.

It is an arithmetic number, because the mean of its divisors is an integer number (8152368).

Almost surely, 2^108100421 is an apocalyptic number.

108100421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

108100421 is a deficient number, since it is larger than the sum of its proper divisors (22337467).

108100421 is a wasteful number, since it uses less digits than its factorization.

108100421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20492.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 108100421 is about 10397.1352304373. The cubic root of 108100421 is about 476.3678702380.

The spelling of 108100421 in words is "one hundred eight million, one hundred thousand, four hundred twenty-one".