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120143061 = 3319234197
BaseRepresentation
bin1110010100100…
…11110011010101
322101001220022000
413022103303111
5221224034221
615531025513
72656125213
oct712236325
9271056260
10120143061
11618aa295
123429b299
131bb7708c
1411d55cb3
15a832e26
hex7293cd5

120143061 has 16 divisors (see below), whose sum is σ = 187358400. Its totient is φ = 75879504.

The previous prime is 120143041. The next prime is 120143071. The reversal of 120143061 is 160341021.

It is a happy number.

It is not a de Polignac number, because 120143061 - 29 = 120142549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120143041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116586 + ... + 117611.

It is an arithmetic number, because the mean of its divisors is an integer number (11709900).

Almost surely, 2120143061 is an apocalyptic number.

It is an amenable number.

120143061 is a deficient number, since it is larger than the sum of its proper divisors (67215339).

120143061 is a wasteful number, since it uses less digits than its factorization.

120143061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234225 (or 234219 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 120143061 is about 10960.9790164930. The cubic root of 120143061 is about 493.4383474500.

Adding to 120143061 its reverse (160341021), we get a palindrome (280484082).

The spelling of 120143061 in words is "one hundred twenty million, one hundred forty-three thousand, sixty-one".

Divisors: 1 3 9 19 27 57 171 513 234197 702591 2107773 4449743 6323319 13349229 40047687 120143061