[go: up one dir, main page]

Search a number
-
+
162705121 is a prime number
BaseRepresentation
bin10011011001010…
…10111011100001
3102100011021110121
421230222323201
5313123030441
624051200241
74013653645
oct1154527341
9370137417
10162705121
118392a847
12465a6081
1327929b27
1417874c25
15e43ddd1
hex9b2aee1

162705121 has 2 divisors, whose sum is σ = 162705122. Its totient is φ = 162705120.

The previous prime is 162705119. The next prime is 162705131. The reversal of 162705121 is 121507261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114597025 + 48108096 = 10705^2 + 6936^2 .

It is a cyclic number.

It is not a de Polignac number, because 162705121 - 21 = 162705119 is a prime.

Together with 162705119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (162705131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81352560 + 81352561.

It is an arithmetic number, because the mean of its divisors is an integer number (81352561).

Almost surely, 2162705121 is an apocalyptic number.

It is an amenable number.

162705121 is a deficient number, since it is larger than the sum of its proper divisors (1).

162705121 is an equidigital number, since it uses as much as digits as its factorization.

162705121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 162705121 is about 12755.5917542073. The cubic root of 162705121 is about 545.9259527827.

The spelling of 162705121 in words is "one hundred sixty-two million, seven hundred five thousand, one hundred twenty-one".