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142980244 = 221119171029
BaseRepresentation
bin10001000010110…
…11010010010100
3100222001011000121
420201123102110
5243100331434
622104321324
73354212011
oct1041332224
9328034017
10142980244
11737881a0
123ba73244
13238119c4
1414dbc708
15c8447b4
hex885b494

142980244 has 24 divisors (see below), whose sum is σ = 287330400. Its totient is φ = 61570080.

The previous prime is 142980221. The next prime is 142980281. The reversal of 142980244 is 442089241.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84679 + ... + 86350.

It is an arithmetic number, because the mean of its divisors is an integer number (11972100).

Almost surely, 2142980244 is an apocalyptic number.

It is an amenable number.

142980244 is an abundant number, since it is smaller than the sum of its proper divisors (144350156).

142980244 is a wasteful number, since it uses less digits than its factorization.

142980244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171063 (or 171061 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 142980244 is about 11957.4346747118. The cubic root of 142980244 is about 522.9080703704.

The spelling of 142980244 in words is "one hundred forty-two million, nine hundred eighty thousand, two hundred forty-four".

Divisors: 1 2 4 11 19 22 38 44 76 209 418 836 171029 342058 684116 1881319 3249551 3762638 6499102 7525276 12998204 35745061 71490122 142980244