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142144125 = 353894259
BaseRepresentation
bin10000111100011…
…11001001111101
3100220110200002020
420132033021331
5242342103000
622034350353
73344130234
oct1036171175
9326420066
10142144125
1173266a92
123b72b3b9
13235ab266
1414c41b1b
15c72bba0
hex878f27d

142144125 has 32 divisors (see below), whose sum is σ = 239241600. Its totient is φ = 74940800.

The previous prime is 142144103. The next prime is 142144127. The reversal of 142144125 is 521441241.

It is not a de Polignac number, because 142144125 - 212 = 142140029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142144095 and 142144104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142144127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31246 + ... + 35504.

It is an arithmetic number, because the mean of its divisors is an integer number (7476300).

Almost surely, 2142144125 is an apocalyptic number.

142144125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142144125 is a deficient number, since it is larger than the sum of its proper divisors (97097475).

142144125 is an equidigital number, since it uses as much as digits as its factorization.

142144125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366 (or 4356 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 142144125 is about 11922.4211047924. The cubic root of 142144125 is about 521.8867908221.

Adding to 142144125 its reverse (521441241), we get a palindrome (663585366).

The spelling of 142144125 in words is "one hundred forty-two million, one hundred forty-four thousand, one hundred twenty-five".

Divisors: 1 3 5 15 25 75 89 125 267 375 445 1335 2225 4259 6675 11125 12777 21295 33375 63885 106475 319425 379051 532375 1137153 1597125 1895255 5685765 9476275 28428825 47381375 142144125