420502255 has 8 divisors (see below), whose sum is σ = 504885024. Its totient is φ = 336213600.

The previous prime is 420502241. The next prime is 420502283. The reversal of 420502255 is 552205024.

It is a happy number.

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

It is not a de Polignac number, because 420502255 - 2⁹ = 420501743 is a prime.

It is a super-3 number, since 3×420502255³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13291 + ... + 31900.

It is an arithmetic number, because the mean of its divisors is an integer number (63110628).

Almost surely, 2^420502255 is an apocalyptic number.

420502255 is a deficient number, since it is larger than the sum of its proper divisors (84382769).

420502255 is a wasteful number, since it uses less digits than its factorization.

420502255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47057.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 420502255 is about 20506.1516379841. The cubic root of 420502255 is about 749.1856375533.

Adding to 420502255 its reverse (552205024), we get a palindrome (972707279).

The spelling of 420502255 in words is "four hundred twenty million, five hundred two thousand, two hundred fifty-five".