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BaseRepresentation
bin100010101100101010
321012221210
4202230222
514021442
63013550
71131231
oct425452
9235853
10142122
1197862
126a2b6
134c8c6
1439b18
152c19c
hex22b2a

142122 has 8 divisors (see below), whose sum is σ = 284256. Its totient is φ = 47372.

The previous prime is 142111. The next prime is 142123. The reversal of 142122 is 221241.

Adding to 142122 its reverse (221241), we get a palindrome (363363).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 142098 and 142107.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142122.

It is not an unprimeable number, because it can be changed into a prime (142123) by changing a digit.

142122 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11838 + ... + 11849.

It is an arithmetic number, because the mean of its divisors is an integer number (35532).

2142122 is an apocalyptic number.

142122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142122 is a wasteful number, since it uses less digits than its factorization.

142122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23692.

The product of its digits is 32, while the sum is 12.

The square root of 142122 is about 376.9907160661. The cubic root of 142122 is about 52.1859711864.

The spelling of 142122 in words is "one hundred forty-two thousand, one hundred twenty-two", and thus it is an iban number.

Divisors: 1 2 3 6 23687 47374 71061 142122