404242134100421 has 8 divisors (see below), whose sum is σ = 425542217530080. Its totient is φ = 382944468834288.

The previous prime is 404242134100361. The next prime is 404242134100433. The reversal of 404242134100421 is 124001431242404.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404242134100421 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 (404242134100921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604197731 + ... + 604866416.

It is an arithmetic number, because the mean of its divisors is an integer number (53192777191260).

Almost surely, 2^{404242134100421} is an apocalyptic number.

It is an amenable number.

404242134100421 is a deficient number, since it is larger than the sum of its proper divisors (21300083429659).

404242134100421 is a wasteful number, since it uses less digits than its factorization.

404242134100421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209081763.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 404242134100421 its reverse (124001431242404), we get a palindrome (528243565342825).

The spelling of 404242134100421 in words is "four hundred four trillion, two hundred forty-two billion, one hundred thirty-four million, one hundred thousand, four hundred twenty-one".