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142707 = 347569
BaseRepresentation
bin100010110101110011
321020202110
4202311303
514031312
63020403
71133025
oct426563
9236673
10142707
1198244
126a703
134cc56
143a015
152c43c
hex22d73

142707 has 4 divisors (see below), whose sum is σ = 190280. Its totient is φ = 95136.

The previous prime is 142699. The next prime is 142711. The reversal of 142707 is 707241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 707241 = 3235747.

It is not a de Polignac number, because 142707 - 23 = 142699 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142707.

It is not an unprimeable number, because it can be changed into a prime (142757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23782 + ... + 23787.

It is an arithmetic number, because the mean of its divisors is an integer number (47570).

2142707 is an apocalyptic number.

142707 is a deficient number, since it is larger than the sum of its proper divisors (47573).

142707 is an equidigital number, since it uses as much as digits as its factorization.

142707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47572.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 142707 is about 377.7658004637. The cubic root of 142707 is about 52.2574754839.

Adding to 142707 its reverse (707241), we get a palindrome (849948).

The spelling of 142707 in words is "one hundred forty-two thousand, seven hundred seven", and thus it is an iban number.

Divisors: 1 3 47569 142707