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142169880 = 23351184749
BaseRepresentation
bin10000111100101…
…01011100011000
3100220111222102010
420132111130120
5242343414010
622035105520
73344265306
oct1036253430
9326458363
10142169880
1173284376
123b7422a0
13235b9bb8
1414c4b276
15c734620
hex8795718

142169880 has 32 divisors (see below), whose sum is σ = 426510000. Its totient is φ = 37911936.

The previous prime is 142169879. The next prime is 142169891. The reversal of 142169880 is 88961241.

142169880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592255 + ... + 592494.

Almost surely, 2142169880 is an apocalyptic number.

142169880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142169880 is an abundant number, since it is smaller than the sum of its proper divisors (284340120).

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

142169880 is a wasteful number, since it uses less digits than its factorization.

142169880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184763 (or 1184759 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 142169880 is about 11923.5011636683. The cubic root of 142169880 is about 521.9183090261.

The spelling of 142169880 in words is "one hundred forty-two million, one hundred sixty-nine thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 1184749 2369498 3554247 4738996 5923745 7108494 9477992 11847490 14216988 17771235 23694980 28433976 35542470 47389960 71084940 142169880