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119487161 = 41271081
BaseRepresentation
bin1110001111100…
…11101010111001
322022211120120102
413013303222321
5221042042121
615505005145
72650424033
oct707635271
9268746512
10119487161
11614a1522
12340237b5
131b9a7681
1411c24c53
15a75390b
hex71f3ab9

119487161 has 6 divisors (see below), whose sum is σ = 122474286. Its totient is φ = 116571200.

The previous prime is 119487157. The next prime is 119487167. The reversal of 119487161 is 161784911.

It can be written as a sum of positive squares in 3 ways, for example, as 400 + 119486761 = 20^2 + 10931^2 .

It is not a de Polignac number, because 119487161 - 22 = 119487157 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 (119487167) 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 5 ways as a sum of consecutive naturals, for example, 33860 + ... + 37221.

It is an arithmetic number, because the mean of its divisors is an integer number (20412381).

Almost surely, 2119487161 is an apocalyptic number.

119487161 is the 4889-th centered decagonal number.

It is an amenable number.

119487161 is a deficient number, since it is larger than the sum of its proper divisors (2987125).

119487161 is an frugal number, since it uses more digits than its factorization.

119487161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71163 (or 71122 counting only the distinct ones).

The product of its digits is 12096, while the sum is 38.

The square root of 119487161 is about 10931.0182965724. The cubic root of 119487161 is about 492.5387616687.

The spelling of 119487161 in words is "one hundred nineteen million, four hundred eighty-seven thousand, one hundred sixty-one".

Divisors: 1 41 1681 71081 2914321 119487161