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142312 = 2317789
BaseRepresentation
bin100010101111101000
321020012211
4202233220
514023222
63014504
71131622
oct425750
9236184
10142312
1197a15
126a434
134ca11
1439c12
152c277
hex22be8

142312 has 8 divisors (see below), whose sum is σ = 266850. Its totient is φ = 71152.

The previous prime is 142297. The next prime is 142319. The reversal of 142312 is 213241.

142312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 81796 + 60516 = 286^2 + 246^2 .

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

It is an Ulam number.

It is a pancake number, because a pancake can be divided into 142312 parts by 533 straight cuts.

It is a junction number, because it is equal to n+sod(n) for n = 142292 and 142301.

It is not an unprimeable number, because it can be changed into a prime (142319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8887 + ... + 8902.

2142312 is an apocalyptic number.

It is an amenable number.

142312 is a deficient number, since it is larger than the sum of its proper divisors (124538).

142312 is a wasteful number, since it uses less digits than its factorization.

142312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17795 (or 17791 counting only the distinct ones).

The product of its digits is 48, while the sum is 13.

The square root of 142312 is about 377.2426274959. The cubic root of 142312 is about 52.2092162840.

The spelling of 142312 in words is "one hundred forty-two thousand, three hundred twelve", and is thus an iban number.

Divisors: 1 2 4 8 17789 35578 71156 142312