Search a number
-
+
142873188 = 22311906099
BaseRepresentation
bin10001000010000…
…01001001100100
3100221211201011120
420201001021210
5243033420223
622102133540
73353254623
oct1041011144
9327751146
10142873188
1173714817
123ba212b0
13237a5063
1414d916ba
15c822be3
hex8841264

142873188 has 12 divisors (see below), whose sum is σ = 333370800. Its totient is φ = 47624392.

The previous prime is 142873187. The next prime is 142873193. The reversal of 142873188 is 881378241.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (142873183) 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, 5953038 + ... + 5953061.

It is an arithmetic number, because the mean of its divisors is an integer number (27780900).

Almost surely, 2142873188 is an apocalyptic number.

It is an amenable number.

142873188 is an abundant number, since it is smaller than the sum of its proper divisors (190497612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142873188 is a wasteful number, since it uses less digits than its factorization.

142873188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11906106 (or 11906104 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The square root of 142873188 is about 11952.9572909803. The cubic root of 142873188 is about 522.7775292030. Note that the first 3 decimals are identical.

The spelling of 142873188 in words is "one hundred forty-two million, eight hundred seventy-three thousand, one hundred eighty-eight".

Divisors: 1 2 3 4 6 12 11906099 23812198 35718297 47624396 71436594 142873188