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142149175 = 527812281
BaseRepresentation
bin10000111100100…
…00011000110111
3100220110221000021
420132100120313
5242342233200
622034430011
73344151040
oct1036203067
9326427007
10142149175
117326a863
123b732307
13235b064c
1414c438c7
15c72d41a
hex8790637

142149175 has 12 divisors (see below), whose sum is σ = 201445936. Its totient is φ = 97473600.

The previous prime is 142149169. The next prime is 142149191. The reversal of 142149175 is 571941241.

It is not a de Polignac number, because 142149175 - 27 = 142149047 is a prime.

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 Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142149175.

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 11 ways as a sum of consecutive naturals, for example, 405966 + ... + 406315.

Almost surely, 2142149175 is an apocalyptic number.

142149175 is a deficient number, since it is larger than the sum of its proper divisors (59296761).

142149175 is an equidigital number, since it uses as much as digits as its factorization.

142149175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812298 (or 812293 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 142149175 is about 11922.6328887541. The cubic root of 142149175 is about 521.8929711621.

The spelling of 142149175 in words is "one hundred forty-two million, one hundred forty-nine thousand, one hundred seventy-five".

Divisors: 1 5 7 25 35 175 812281 4061405 5685967 20307025 28429835 142149175