404252421455 has 8 divisors (see below), whose sum is σ = 485188935504. Its totient is φ = 323344584000.

The previous prime is 404252421439. The next prime is 404252421481. The reversal of 404252421455 is 554124252404.

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

It is not a de Polignac number, because 404252421455 - 2⁴ = 404252421439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7138121 + ... + 7194530.

It is an arithmetic number, because the mean of its divisors is an integer number (60648616938).

Almost surely, 2^404252421455 is an apocalyptic number.

404252421455 is a deficient number, since it is larger than the sum of its proper divisors (80936514049).

404252421455 is a wasteful number, since it uses less digits than its factorization.

404252421455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14338297.

The product of its (nonzero) digits is 256000, while the sum is 38.

Adding to 404252421455 its reverse (554124252404), we get a palindrome (958376673859).

The spelling of 404252421455 in words is "four hundred four billion, two hundred fifty-two million, four hundred twenty-one thousand, four hundred fifty-five".