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142277 = 731949
BaseRepresentation
bin100010101111000101
321020011112
4202233011
514023102
63014405
71131542
oct425705
9236145
10142277
1197993
126a405
134c9b5
1439bc9
152c252
hex22bc5

142277 has 4 divisors (see below), whose sum is σ = 144300. Its totient is φ = 140256.

The previous prime is 142271. The next prime is 142297. The reversal of 142277 is 772241.

142277 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 98596 + 43681 = 314^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 142277 - 212 = 138181 is a prime.

It is a d-powerful number, because it can be written as 1 + 47 + 2 + 213 + 72 + 76 .

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142277.

It is not an unprimeable number, because it can be changed into a prime (142271) 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, 902 + ... + 1047.

It is an arithmetic number, because the mean of its divisors is an integer number (36075).

2142277 is an apocalyptic number.

It is an amenable number.

142277 is a deficient number, since it is larger than the sum of its proper divisors (2023).

142277 is an equidigital number, since it uses as much as digits as its factorization.

142277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022.

The product of its digits is 784, while the sum is 23.

The square root of 142277 is about 377.1962354001. The cubic root of 142277 is about 52.2049358476.

It can be divided in two parts, 14 and 2277, that multiplied together give a triangular number (31878 = T252).

The spelling of 142277 in words is "one hundred forty-two thousand, two hundred seventy-seven", and thus it is an iban number.

Divisors: 1 73 1949 142277