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142850305 = 5132197697
BaseRepresentation
bin10001000001110…
…11100100000001
3100221210112210001
420200323210001
5243032202210
622101440001
73353131123
oct1040734401
9327715701
10142850305
11736a9604
123ba10001
1323797810
1414d87213
15c81b03a
hex883b901

142850305 has 8 divisors (see below), whose sum is σ = 184606632. Its totient is φ = 105489408.

The previous prime is 142850299. The next prime is 142850321. The reversal of 142850305 is 503058241.

It is a Cunningham number, because it is equal to 119522+1.

It can be written as a sum of positive squares in 4 ways, for example, as 21123216 + 121727089 = 4596^2 + 11033^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 142850305 - 27 = 142850177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098784 + ... + 1098913.

It is an arithmetic number, because the mean of its divisors is an integer number (23075829).

Almost surely, 2142850305 is an apocalyptic number.

It is an amenable number.

142850305 is a deficient number, since it is larger than the sum of its proper divisors (41756327).

142850305 is a wasteful number, since it uses less digits than its factorization.

142850305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197715.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 142850305 is about 11952.0000418340. Note that the first 4 decimals coincide. The cubic root of 142850305 is about 522.7496178384.

The spelling of 142850305 in words is "one hundred forty-two million, eight hundred fifty thousand, three hundred five".

Divisors: 1 5 13 65 2197697 10988485 28570061 142850305