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142870741 = 1324717987
BaseRepresentation
bin10001000010000…
…00100011010101
3100221211120210221
420201000203111
5243033330431
622102114341
73353244526
oct1041004325
9327746727
10142870741
11737129a2
123ba1b9b1
13237a3c00
1414d9084d
15c822111
hex88408d5

142870741 has 12 divisors (see below), whose sum is σ = 158006592. Its totient is φ = 129067536.

The previous prime is 142870699. The next prime is 142870751. The reversal of 142870741 is 147078241.

It is not a de Polignac number, because 142870741 - 217 = 142739669 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 142870697 and 142870706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142870751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1051 + ... + 16936.

It is an arithmetic number, because the mean of its divisors is an integer number (13167216).

Almost surely, 2142870741 is an apocalyptic number.

It is an amenable number.

142870741 is a deficient number, since it is larger than the sum of its proper divisors (15135851).

142870741 is a wasteful number, since it uses less digits than its factorization.

142870741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18060 (or 18047 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 142870741 is about 11952.8549309360. The cubic root of 142870741 is about 522.7745446357.

The spelling of 142870741 in words is "one hundred forty-two million, eight hundred seventy thousand, seven hundred forty-one".

Divisors: 1 13 47 169 611 7943 17987 233831 845389 3039803 10990057 142870741