420274285 has 16 divisors (see below), whose sum is σ = 543237120. Its totient is φ = 311224320.

The previous prime is 420274277. The next prime is 420274297. The reversal of 420274285 is 582472024.

It is not a de Polignac number, because 420274285 - 2³ = 420274277 is a prime.

It is a super-2 number, since 2×420274285² = 353260949264522450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420274285.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55380 + ... + 62509.

It is an arithmetic number, because the mean of its divisors is an integer number (33952320).

Almost surely, 2^420274285 is an apocalyptic number.

It is an amenable number.

420274285 is a deficient number, since it is larger than the sum of its proper divisors (122962835).

420274285 is a wasteful number, since it uses less digits than its factorization.

420274285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117948.

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 420274285 is about 20500.5923085164. The cubic root of 420274285 is about 749.0502258947.

It can be divided in two parts, 4202 and 74285, that added together give a palindrome (78487).

The spelling of 420274285 in words is "four hundred twenty million, two hundred seventy-four thousand, two hundred eighty-five".