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142224 = 2432963
BaseRepresentation
bin100010101110010000
321020002120
4202232100
514022344
63014240
71131435
oct425620
9236076
10142224
1197945
126a380
134c974
1439b8c
152c219
hex22b90

142224 has 20 divisors (see below), whose sum is σ = 367536. Its totient is φ = 47392.

The previous prime is 142223. The next prime is 142231. The reversal of 142224 is 422241.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (142223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1434 + ... + 1529.

2142224 is an apocalyptic number.

It is an amenable number.

142224 is an abundant number, since it is smaller than the sum of its proper divisors (225312).

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

142224 is a wasteful number, since it uses less digits than its factorization.

142224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974 (or 2968 counting only the distinct ones).

The product of its digits is 128, while the sum is 15.

The square root of 142224 is about 377.1259736481. The cubic root of 142224 is about 52.1984527073.

Adding to 142224 its reverse (422241), we get a palindrome (564465).

The spelling of 142224 in words is "one hundred forty-two thousand, two hundred twenty-four", and thus it is an iban number.