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142242 = 23151157
BaseRepresentation
bin100010101110100010
321020010020
4202232202
514022432
63014310
71131462
oct425642
9236106
10142242
1197961
126a396
134c989
1439ba2
152c22c
hex22ba2

142242 has 16 divisors (see below), whose sum is σ = 288192. Its totient is φ = 46800.

The previous prime is 142237. The next prime is 142271. The reversal of 142242 is 242241.

Adding to 142242 its reverse (242241), we get a palindrome (384483).

Subtracting 142242 from its reverse (242241), we obtain a palindrome (99999).

142242 is nontrivially palindromic in base 4.

It is an unprimeable number.

142242 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 7 ways as a sum of consecutive naturals, for example, 828 + ... + 984.

It is an arithmetic number, because the mean of its divisors is an integer number (18012).

2142242 is an apocalyptic number.

142242 is an abundant number, since it is smaller than the sum of its proper divisors (145950).

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

142242 is a wasteful number, since it uses less digits than its factorization.

142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313.

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

The square root of 142242 is about 377.1498375977. The cubic root of 142242 is about 52.2006547091.

The spelling of 142242 in words is "one hundred forty-two thousand, two hundred forty-two", and thus it is an iban number.

Divisors: 1 2 3 6 151 157 302 314 453 471 906 942 23707 47414 71121 142242