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120140215 = 5131848311
BaseRepresentation
bin1110010100100…
…11000110110111
322101001202101121
413022103012313
5221223441330
615531004411
72656114006
oct712230667
9271052347
10120140215
11618a8138
1234299707
131bb759b0
1411d54c3d
15a83217a
hex72931b7

120140215 has 8 divisors (see below), whose sum is σ = 155258208. Its totient is φ = 88718880.

The previous prime is 120140203. The next prime is 120140219. The reversal of 120140215 is 512041021.

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

It is not a de Polignac number, because 120140215 - 25 = 120140183 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 (120140219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924091 + ... + 924220.

It is an arithmetic number, because the mean of its divisors is an integer number (19407276).

Almost surely, 2120140215 is an apocalyptic number.

120140215 is a deficient number, since it is larger than the sum of its proper divisors (35117993).

120140215 is a wasteful number, since it uses less digits than its factorization.

120140215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848329.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 120140215 is about 10960.8491915545. The cubic root of 120140215 is about 493.4344511600.

Adding to 120140215 its reverse (512041021), we get a palindrome (632181236).

The spelling of 120140215 in words is "one hundred twenty million, one hundred forty thousand, two hundred fifteen".

Divisors: 1 5 13 65 1848311 9241555 24028043 120140215