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420230043 = 32715931109
BaseRepresentation
bin11001000011000…
…011001110011011
31002021201220020200
4121003003032123
51330034330133
6105410553243
713261616322
oct3103031633
91067656220
10420230043
111a6233062
12b8898823
13690a563c
143db4d0b9
1526d5c913
hex190c339b

420230043 has 24 divisors (see below), whose sum is σ = 617142240. Its totient is φ = 275493120.

The previous prime is 420230003. The next prime is 420230059. The reversal of 420230043 is 340032024.

It is not a de Polignac number, because 420230043 - 212 = 420225947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420229998 and 420230025.

It is not an unprimeable number, because it can be changed into a prime (420230003) 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, 378373 + ... + 379481.

It is an arithmetic number, because the mean of its divisors is an integer number (25714260).

Almost surely, 2420230043 is an apocalyptic number.

420230043 is a deficient number, since it is larger than the sum of its proper divisors (196912197).

420230043 is a wasteful number, since it uses less digits than its factorization.

420230043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779 (or 1776 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 420230043 is about 20499.5132381235. The cubic root of 420230043 is about 749.0239409627.

Adding to 420230043 its reverse (340032024), we get a palindrome (760262067).

The spelling of 420230043 in words is "four hundred twenty million, two hundred thirty thousand, forty-three".

Divisors: 1 3 9 71 213 593 639 1109 1779 3327 5337 9981 42103 78739 126309 236217 378927 657637 708651 1972911 5918733 46692227 140076681 420230043