420502955 has 8 divisors (see below), whose sum is σ = 506996304. Its totient is φ = 334807200.

The previous prime is 420502933. The next prime is 420502963. The reversal of 420502955 is 559205024.

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

It is not a de Polignac number, because 420502955 - 2¹⁸ = 420240811 is a prime.

It is a Duffinian 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, 198236 + ... + 200345.

It is an arithmetic number, because the mean of its divisors is an integer number (63374538).

Almost surely, 2^420502955 is an apocalyptic number.

420502955 is a deficient number, since it is larger than the sum of its proper divisors (86493349).

420502955 is a wasteful number, since it uses less digits than its factorization.

420502955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398797.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 420502955 is about 20506.1687060260. The cubic root of 420502955 is about 749.1860532701.

Adding to 420502955 its reverse (559205024), we get a palindrome (979707979).

The spelling of 420502955 in words is "four hundred twenty million, five hundred two thousand, nine hundred fifty-five".