101804421 has 8 divisors (see below), whose sum is σ = 136572640. Its totient is φ = 67452912.

The previous prime is 101804411. The next prime is 101804429. The reversal of 101804421 is 124408101.

It is a happy number.

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

It is not a de Polignac number, because 101804421 - 2⁵ = 101804389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101804429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103606 + ... + 104583.

It is an arithmetic number, because the mean of its divisors is an integer number (17071580).

Almost surely, 2^101804421 is an apocalyptic number.

It is an amenable number.

101804421 is a deficient number, since it is larger than the sum of its proper divisors (34768219).

101804421 is a wasteful number, since it uses less digits than its factorization.

101804421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208355.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 101804421 is about 10089.8176891359. The cubic root of 101804421 is about 466.9340512467.

The spelling of 101804421 in words is "one hundred one million, eight hundred four thousand, four hundred twenty-one".