Search a number
-
+
142995161 = 352740543
BaseRepresentation
bin10001000010111…
…10111011011001
3100222001220111002
420201132323121
5243101321121
622104514345
73354303341
oct1041367331
9328056432
10142995161
1173798421
123ba7b9b5
132381872a
1414dc3d21
15c848e0b
hex885eed9

142995161 has 4 divisors (see below), whose sum is σ = 143039232. Its totient is φ = 142951092.

The previous prime is 142995137. The next prime is 142995179. The reversal of 142995161 is 161599241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142995161 - 214 = 142978777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142995191) 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, 16745 + ... + 23798.

It is an arithmetic number, because the mean of its divisors is an integer number (35759808).

Almost surely, 2142995161 is an apocalyptic number.

It is an amenable number.

142995161 is a deficient number, since it is larger than the sum of its proper divisors (44071).

142995161 is an equidigital number, since it uses as much as digits as its factorization.

142995161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44070.

The product of its digits is 19440, while the sum is 38.

The square root of 142995161 is about 11958.0584126354. The cubic root of 142995161 is about 522.9262545807.

The spelling of 142995161 in words is "one hundred forty-two million, nine hundred ninety-five thousand, one hundred sixty-one".

Divisors: 1 3527 40543 142995161