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143912 = 2317989
BaseRepresentation
bin100011001000101000
321022102002
4203020220
514101122
63030132
71136366
oct431050
9238362
10143912
119913a
126b348
1350672
143a636
152c992
hex23228

143912 has 8 divisors (see below), whose sum is σ = 269850. Its totient is φ = 71952.

The previous prime is 143909. The next prime is 143947. The reversal of 143912 is 219341.

It can be written as a sum of positive squares in only one way, i.e., 106276 + 37636 = 326^2 + 194^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143912.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8987 + ... + 9002.

2143912 is an apocalyptic number.

It is an amenable number.

143912 is a deficient number, since it is larger than the sum of its proper divisors (125938).

143912 is a wasteful number, since it uses less digits than its factorization.

143912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17995 (or 17991 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 143912 is about 379.3573513193. The cubic root of 143912 is about 52.4041486139.

It can be divided in two parts, 14391 and 2, that multiplied together give a palindrome (28782).

The spelling of 143912 in words is "one hundred forty-three thousand, nine hundred twelve".

Divisors: 1 2 4 8 17989 35978 71956 143912