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7142 = 23571
BaseRepresentation
bin1101111100110
3100210112
41233212
5212032
653022
726552
oct15746
910715
107142
115403
124172
133335
142862
1521b2
hex1be6

7142 has 4 divisors (see below), whose sum is σ = 10716. Its totient is φ = 3570.

The previous prime is 7129. The next prime is 7151. The reversal of 7142 is 2417.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

7142 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 as a sum of consecutive naturals, namely, 1784 + ... + 1787.

It is an arithmetic number, because the mean of its divisors is an integer number (2679).

27142 is an apocalyptic number.

7142 is a deficient number, since it is larger than the sum of its proper divisors (3574).

7142 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 12 representation: 7142 = (4172)12.

7142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573.

The product of its digits is 56, while the sum is 14.

The square root of 7142 is about 84.5103543952. The cubic root of 7142 is about 19.2577974820.

Adding to 7142 its reverse (2417), we get a palindrome (9559).

The spelling of 7142 in words is "seven thousand, one hundred forty-two", and thus it is an iban number.

Divisors: 1 2 3571 7142