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142955 = 528591
BaseRepresentation
bin100010111001101011
321021002122
4202321223
514033310
63021455
71133531
oct427153
9237078
10142955
119844a
126a88b
13500b7
143a151
152c555
hex22e6b

142955 has 4 divisors (see below), whose sum is σ = 171552. Its totient is φ = 114360.

The previous prime is 142949. The next prime is 142963. The reversal of 142955 is 559241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 559241 = 797079.

It is not a de Polignac number, because 142955 - 24 = 142939 is a prime.

It is a super-2 number, since 2×1429552 = 40872264050, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142955.

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, 14291 + ... + 14300.

It is an arithmetic number, because the mean of its divisors is an integer number (42888).

2142955 is an apocalyptic number.

142955 is a deficient number, since it is larger than the sum of its proper divisors (28597).

142955 is an equidigital number, since it uses as much as digits as its factorization.

142955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28596.

The product of its digits is 1800, while the sum is 26.

The square root of 142955 is about 378.0939036800. The cubic root of 142955 is about 52.2877294398.

The spelling of 142955 in words is "one hundred forty-two thousand, nine hundred fifty-five".

Divisors: 1 5 28591 142955