420503455 has 8 divisors (see below), whose sum is σ = 505701504. Its totient is φ = 335671200.

The previous prime is 420503453. The next prime is 420503467. The reversal of 420503455 is 554305024.

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

It is not a de Polignac number, because 420503455 - 2¹ = 420503453 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 (420503453) 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, 88911 + ... + 93520.

It is an arithmetic number, because the mean of its divisors is an integer number (63212688).

Almost surely, 2^420503455 is an apocalyptic number.

420503455 is a deficient number, since it is larger than the sum of its proper divisors (85198049).

420503455 is a wasteful number, since it uses less digits than its factorization.

420503455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182897.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 420503455 is about 20506.1808974758. The cubic root of 420503455 is about 749.1863502105.

Adding to 420503455 its reverse (554305024), we get a palindrome (974808479).

The spelling of 420503455 in words is "four hundred twenty million, five hundred three thousand, four hundred fifty-five".