Search a number
-
+
138130301 = 149927049
BaseRepresentation
bin10000011101110…
…11001101111101
3100121220202011002
420032323031331
5240330132201
621412340045
73265042151
oct1016731575
9317822132
10138130301
1170a75381
123a314625
132280430a
14144b9061
15c1d776b
hex83bb37d

138130301 has 4 divisors (see below), whose sum is σ = 139057500. Its totient is φ = 137203104.

The previous prime is 138130297. The next prime is 138130309. The reversal of 138130301 is 103031831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 103031831 = 714718833.

It can be written as a sum of positive squares in 2 ways, for example, as 41088100 + 97042201 = 6410^2 + 9851^2 .

It is a cyclic number.

It is not a de Polignac number, because 138130301 - 22 = 138130297 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138130309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463376 + ... + 463673.

It is an arithmetic number, because the mean of its divisors is an integer number (34764375).

Almost surely, 2138130301 is an apocalyptic number.

It is an amenable number.

138130301 is a deficient number, since it is larger than the sum of its proper divisors (927199).

138130301 is an equidigital number, since it uses as much as digits as its factorization.

138130301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927198.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 138130301 is about 11752.8847948068. The cubic root of 138130301 is about 516.9275189679.

The spelling of 138130301 in words is "one hundred thirty-eight million, one hundred thirty thousand, three hundred one".

Divisors: 1 149 927049 138130301