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143142141 = 3431109629
BaseRepresentation
bin10001000100000…
…10110011111101
3100222100101002210
420202002303331
5243121022031
622112011033
73355455012
oct1042026375
9328311083
10143142141
117388889a
123bb30a79
132386a5bc
1415021709
15c877746
hex8882cfd

143142141 has 8 divisors (see below), whose sum is σ = 195294880. Its totient is φ = 93208752.

The previous prime is 143142113. The next prime is 143142151. The reversal of 143142141 is 141241341.

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

It is not a de Polignac number, because 143142141 - 211 = 143140093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143142151) 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, 554686 + ... + 554943.

It is an arithmetic number, because the mean of its divisors is an integer number (24411860).

Almost surely, 2143142141 is an apocalyptic number.

It is an amenable number.

143142141 is a deficient number, since it is larger than the sum of its proper divisors (52152739).

143142141 is a wasteful number, since it uses less digits than its factorization.

143142141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109675.

The product of its digits is 384, while the sum is 21.

The square root of 143142141 is about 11964.2024807339. The cubic root of 143142141 is about 523.1053594341.

Adding to 143142141 its reverse (141241341), we get a palindrome (284383482).

The spelling of 143142141 in words is "one hundred forty-three million, one hundred forty-two thousand, one hundred forty-one".

Divisors: 1 3 43 129 1109629 3328887 47714047 143142141