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142390175 = 5227121017
BaseRepresentation
bin10000111110010…
…11001110011111
3100220221011121012
420133023032133
5242422441200
622043525435
73346203464
oct1037131637
9326834535
10142390175
1173414934
123b82987b
1323666255
1414ca766b
15c779a35
hex87cb39f

142390175 has 12 divisors (see below), whose sum is σ = 177223776. Its totient is φ = 113486400.

The previous prime is 142390163. The next prime is 142390177. The reversal of 142390175 is 571093241.

It is not a de Polignac number, because 142390175 - 26 = 142390111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142390177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3734 + ... + 17283.

It is an arithmetic number, because the mean of its divisors is an integer number (14768648).

Almost surely, 2142390175 is an apocalyptic number.

142390175 is a deficient number, since it is larger than the sum of its proper divisors (34833601).

142390175 is a wasteful number, since it uses less digits than its factorization.

142390175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21298 (or 21293 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 142390175 is about 11932.7354366046. The cubic root of 142390175 is about 522.1877441064.

The spelling of 142390175 in words is "one hundred forty-two million, three hundred ninety thousand, one hundred seventy-five".

Divisors: 1 5 25 271 1355 6775 21017 105085 525425 5695607 28478035 142390175