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120220242 = 23109183823
BaseRepresentation
bin1110010101001…
…10101001010010
322101012211011120
413022212221102
5221234021432
615532423110
72656566222
oct712465122
9271184146
10120220242
116195227a
1234317a96
131bba324c
1411d76082
15a84ac2c
hex72a6a52

120220242 has 16 divisors (see below), whose sum is σ = 242647680. Its totient is φ = 39705552.

The previous prime is 120220237. The next prime is 120220249. The reversal of 120220242 is 242022021.

It is not an unprimeable number, because it can be changed into a prime (120220249) 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, 91258 + ... + 92565.

It is an arithmetic number, because the mean of its divisors is an integer number (15165480).

Almost surely, 2120220242 is an apocalyptic number.

120220242 is an abundant number, since it is smaller than the sum of its proper divisors (122427438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120220242 is a wasteful number, since it uses less digits than its factorization.

120220242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183937.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 120220242 is about 10964.4991677687. The cubic root of 120220242 is about 493.5439879326.

Adding to 120220242 its reverse (242022021), we get a palindrome (362242263).

The spelling of 120220242 in words is "one hundred twenty million, two hundred twenty thousand, two hundred forty-two".

Divisors: 1 2 3 6 109 218 327 654 183823 367646 551469 1102938 20036707 40073414 60110121 120220242