420308365 has 8 divisors (see below), whose sum is σ = 506931480. Its totient is φ = 334539072.

The previous prime is 420308341. The next prime is 420308381. The reversal of 420308365 is 563803024.

It can be written as a sum of positive squares in 4 ways, for example, as 256928841 + 163379524 = 16029^2 + 12782^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 420308365 - 2⁵ = 420308333 is a prime.

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, 212370 + ... + 214339.

It is an arithmetic number, because the mean of its divisors is an integer number (63366435).

Almost surely, 2^420308365 is an apocalyptic number.

It is an amenable number.

420308365 is a deficient number, since it is larger than the sum of its proper divisors (86623115).

420308365 is a wasteful number, since it uses less digits than its factorization.

420308365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426911.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 420308365 is about 20501.4234871630. The cubic root of 420308365 is about 749.0704721503.

The spelling of 420308365 in words is "four hundred twenty million, three hundred eight thousand, three hundred sixty-five".