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420201430 = 251171173311
BaseRepresentation
bin11001000010111…
…100001111010110
31002021200102222221
4121002330033112
51330032421210
6105410212554
713261440025
oct3102741726
91067612887
10420201430
111a6213610
12b888415a
13690955cc
143db428bc
1526d541da
hex190bc3d6

420201430 has 64 divisors (see below), whose sum is σ = 844286976. Its totient is φ = 149296000.

The previous prime is 420201409. The next prime is 420201433. The reversal of 420201430 is 34102024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420201433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1350975 + ... + 1351285.

It is an arithmetic number, because the mean of its divisors is an integer number (13191984).

Almost surely, 2420201430 is an apocalyptic number.

420201430 is an abundant number, since it is smaller than the sum of its proper divisors (424085546).

420201430 is a wasteful number, since it uses less digits than its factorization.

420201430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 420201430 is about 20498.8153316234. The cubic root of 420201430 is about 749.0069405056.

Adding to 420201430 its reverse (34102024), we get a palindrome (454303454).

The spelling of 420201430 in words is "four hundred twenty million, two hundred one thousand, four hundred thirty".

Divisors: 1 2 5 10 11 22 55 71 110 142 173 311 346 355 622 710 781 865 1555 1562 1730 1903 3110 3421 3806 3905 6842 7810 9515 12283 17105 19030 22081 24566 34210 44162 53803 61415 107606 110405 122830 135113 220810 242891 269015 270226 485782 538030 591833 675565 1183666 1214455 1351130 2428910 2959165 3820013 5918330 7640026 19100065 38200130 42020143 84040286 210100715 420201430