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120012042 = 2320002007
BaseRepresentation
bin1110010011100…
…11110100001010
322100211020120110
413021303310022
5221210341132
615524135150
72655041223
oct711636412
9270736513
10120012042
116181a907
12342374b6
131bb2c557
1411d2024a
15a8091cc
hex7273d0a

120012042 has 8 divisors (see below), whose sum is σ = 240024096. Its totient is φ = 40004012.

The previous prime is 120012041. The next prime is 120012047. The reversal of 120012042 is 240210021.

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

120012042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (120012041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10000998 + ... + 10001009.

It is an arithmetic number, because the mean of its divisors is an integer number (30003012).

Almost surely, 2120012042 is an apocalyptic number.

120012042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

120012042 is a wasteful number, since it uses less digits than its factorization.

120012042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20002012.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 120012042 is about 10955.0007759014. Note that the first 3 decimals coincide. The cubic root of 120012042 is about 493.2589132730.

Adding to 120012042 its reverse (240210021), we get a palindrome (360222063).

The spelling of 120012042 in words is "one hundred twenty million, twelve thousand, forty-two".

Divisors: 1 2 3 6 20002007 40004014 60006021 120012042