420229704285 has 24 divisors (see below), whose sum is σ = 742141519704. Its totient is φ = 219893781120.

The previous prime is 420229704281. The next prime is 420229704289. The reversal of 420229704285 is 582407922024.

420229704285 is a `hidden beast` number, since 420 + 22 + 97 + 0 + 42 + 85 = 666.

It is an interprime number because it is at equal distance from previous prime (420229704281) and next prime (420229704289).

It can be written as a sum of positive squares in 4 ways, for example, as 3465205956 + 416764498329 = 58866^2 + 645573^2 .

It is not a de Polignac number, because 420229704285 - 2² = 420229704281 is a prime.

It is a super-2 number, since 2×420229704285² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 420229704285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420229704281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88096086 + ... + 88100855.

It is an arithmetic number, because the mean of its divisors is an integer number (30922563321).

Almost surely, 2^420229704285 is an apocalyptic number.

420229704285 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

420229704285 is a deficient number, since it is larger than the sum of its proper divisors (321911815419).

420229704285 is a wasteful number, since it uses less digits than its factorization.

420229704285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176197005 (or 176197002 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 420229704285 in words is "four hundred twenty billion, two hundred twenty-nine million, seven hundred four thousand, two hundred eighty-five".