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420341345 = 5137613637
BaseRepresentation
bin11001000011011…
…110011001100001
31002021221112220222
4121003132121201
51330101410340
6105413212425
713262561654
oct3103363141
91067845828
10420341345
111a62a9746
12b8931115
13691141b8
143db7b89b
1526d808b5
hex190de661

420341345 has 8 divisors (see below), whose sum is σ = 508092264. Its totient is φ = 333817984.

The previous prime is 420341333. The next prime is 420341347. The reversal of 420341345 is 543143024.

It can be written as a sum of positive squares in 4 ways, for example, as 78978769 + 341362576 = 8887^2 + 18476^2 .

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 420341345 - 212 = 420337249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420341347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306134 + ... + 307503.

It is an arithmetic number, because the mean of its divisors is an integer number (63511533).

Almost surely, 2420341345 is an apocalyptic number.

It is an amenable number.

420341345 is a deficient number, since it is larger than the sum of its proper divisors (87750919).

420341345 is a wasteful number, since it uses less digits than its factorization.

420341345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613779.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 420341345 is about 20502.2278057776. The cubic root of 420341345 is about 749.0900638755.

Adding to 420341345 its reverse (543143024), we get a palindrome (963484369).

The spelling of 420341345 in words is "four hundred twenty million, three hundred forty-one thousand, three hundred forty-five".

Divisors: 1 5 137 685 613637 3068185 84068269 420341345