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142860271 = 1109128819
BaseRepresentation
bin10001000001111…
…01111111101111
3100221211001110011
420200331333233
5243033012041
622101554051
73353202151
oct1040757757
9327731404
10142860271
1173706044
123ba15927
132379c208
1414d8aad1
15c81de81
hex883dfef

142860271 has 4 divisors (see below), whose sum is σ = 142990200. Its totient is φ = 142730344.

The previous prime is 142860269. The next prime is 142860329. The reversal of 142860271 is 172068241.

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 142860271 - 21 = 142860269 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 (142860241) 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, 63301 + ... + 65518.

It is an arithmetic number, because the mean of its divisors is an integer number (35747550).

Almost surely, 2142860271 is an apocalyptic number.

142860271 is a deficient number, since it is larger than the sum of its proper divisors (129929).

142860271 is a wasteful number, since it uses less digits than its factorization.

142860271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129928.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 142860271 is about 11952.4169522319. The cubic root of 142860271 is about 522.7617741572.

The spelling of 142860271 in words is "one hundred forty-two million, eight hundred sixty thousand, two hundred seventy-one".

Divisors: 1 1109 128819 142860271