101404421 has 4 divisors (see below), whose sum is σ = 103123200. Its totient is φ = 99685644.

The previous prime is 101404399. The next prime is 101404453. The reversal of 101404421 is 124404101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124404101 = 37 ⋅3362273.

It is a cyclic number.

It is not a de Polignac number, because 101404421 - 2¹⁸ = 101142277 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 101404421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101404481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859301 + ... + 859418.

It is an arithmetic number, because the mean of its divisors is an integer number (25780800).

Almost surely, 2^101404421 is an apocalyptic number.

It is an amenable number.

101404421 is a deficient number, since it is larger than the sum of its proper divisors (1718779).

101404421 is an equidigital number, since it uses as much as digits as its factorization.

101404421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718778.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 101404421 is about 10069.9762164565. The cubic root of 101404421 is about 466.3217046459.

Adding to 101404421 its reverse (124404101), we get a palindrome (225808522).

The spelling of 101404421 in words is "one hundred one million, four hundred four thousand, four hundred twenty-one".