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120870143 = 1153104831
BaseRepresentation
bin1110011010001…
…01010011111111
322102102211122222
413031011103333
5221420321033
615554355555
72665244042
oct715052377
9272384588
10120870143
1162256589
123458bbbb
131c06ccc4
14120a4c59
15a928598
hex73454ff

120870143 has 4 divisors (see below), whose sum is σ = 120976128. Its totient is φ = 120764160.

The previous prime is 120870137. The next prime is 120870151. The reversal of 120870143 is 341078021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120870143 - 212 = 120866047 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120870103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51263 + ... + 53568.

It is an arithmetic number, because the mean of its divisors is an integer number (30244032).

Almost surely, 2120870143 is an apocalyptic number.

120870143 is a deficient number, since it is larger than the sum of its proper divisors (105985).

120870143 is a wasteful number, since it uses less digits than its factorization.

120870143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105984.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 120870143 is about 10994.0958245778. The cubic root of 120870143 is about 494.4317432284.

The spelling of 120870143 in words is "one hundred twenty million, eight hundred seventy thousand, one hundred forty-three".

Divisors: 1 1153 104831 120870143