420504351455 has 16 divisors (see below), whose sum is σ = 507042819360. Its totient is φ = 334781662848.

The previous prime is 420504351341. The next prime is 420504351461. The reversal of 420504351455 is 554153405024.

It is a cyclic number.

It is not a de Polignac number, because 420504351455 - 2¹² = 420504347359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 836264 + ... + 1241106.

It is an arithmetic number, because the mean of its divisors is an integer number (31690176210).

Almost surely, 2^420504351455 is an apocalyptic number.

420504351455 is a deficient number, since it is larger than the sum of its proper divisors (86538467905).

420504351455 is a wasteful number, since it uses less digits than its factorization.

420504351455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405850.

The product of its (nonzero) digits is 240000, while the sum is 38.

Adding to 420504351455 its reverse (554153405024), we get a palindrome (974657756479).

The spelling of 420504351455 in words is "four hundred twenty billion, five hundred four million, three hundred fifty-one thousand, four hundred fifty-five".