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420143151 = 3178238101
BaseRepresentation
bin11001000010101…
…110000000101111
31002021120111001110
4121002232000233
51330024040101
6105405043103
713261105101
oct3102560057
91067514043
10420143151
111a618384a
12b8856493
1369074c1c
143db29571
1526d41cd6
hex190ae02f

420143151 has 8 divisors (see below), whose sum is σ = 593143344. Its totient is φ = 263619200.

The previous prime is 420143149. The next prime is 420143161. The reversal of 420143151 is 151341024.

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 420143151 - 21 = 420143149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420143111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4119000 + ... + 4119101.

It is an arithmetic number, because the mean of its divisors is an integer number (74142918).

Almost surely, 2420143151 is an apocalyptic number.

420143151 is a deficient number, since it is larger than the sum of its proper divisors (173000193).

420143151 is a wasteful number, since it uses less digits than its factorization.

420143151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8238121.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 420143151 is about 20497.3937611590. The cubic root of 420143151 is about 748.9723115629.

Adding to 420143151 its reverse (151341024), we get a palindrome (571484175).

The spelling of 420143151 in words is "four hundred twenty million, one hundred forty-three thousand, one hundred fifty-one".

Divisors: 1 3 17 51 8238101 24714303 140047717 420143151