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142588780 = 2257129439
BaseRepresentation
bin10000111111110…
…11101101101100
3100221022021000221
420133323231230
5243000320110
622052101124
73350661505
oct1037735554
9327267027
10142588780
1173540074
123b9047a4
1323705779
1414d19bac
15c7b87da
hex87fbb6c

142588780 has 12 divisors (see below), whose sum is σ = 299436480. Its totient is φ = 57035504.

The previous prime is 142588763. The next prime is 142588793. The reversal of 142588780 is 87885241.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3564700 + ... + 3564739.

It is an arithmetic number, because the mean of its divisors is an integer number (24953040).

Almost surely, 2142588780 is an apocalyptic number.

142588780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142588780 is an abundant number, since it is smaller than the sum of its proper divisors (156847700).

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

142588780 is a wasteful number, since it uses less digits than its factorization.

142588780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7129448 (or 7129446 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 43.

The square root of 142588780 is about 11941.0543923056. The cubic root of 142588780 is about 522.4304128079.

The spelling of 142588780 in words is "one hundred forty-two million, five hundred eighty-eight thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 7129439 14258878 28517756 35647195 71294390 142588780