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131142124 = 2244973019
BaseRepresentation
bin1111101000100…
…01000111101100
3100010202201011201
413310101013230
5232033021444
621002455244
73151455361
oct764210754
9303681151
10131142124
1168032023
1237b04524
13212285b9
14135ba468
15b7a6dd4
hex7d111ec

131142124 has 12 divisors (see below), whose sum is σ = 230013000. Its totient is φ = 65424128.

The previous prime is 131142119. The next prime is 131142127. The reversal of 131142124 is 421241131.

It is not an unprimeable number, because it can be changed into a prime (131142127) 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, 34714 + ... + 38305.

It is an arithmetic number, because the mean of its divisors is an integer number (19167750).

Almost surely, 2131142124 is an apocalyptic number.

It is an amenable number.

131142124 is a deficient number, since it is larger than the sum of its proper divisors (98870876).

131142124 is a wasteful number, since it uses less digits than its factorization.

131142124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73472 (or 73470 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 131142124 is about 11451.7301749561. The cubic root of 131142124 is about 508.0589087864.

Adding to 131142124 its reverse (421241131), we get a palindrome (552383255).

The spelling of 131142124 in words is "one hundred thirty-one million, one hundred forty-two thousand, one hundred twenty-four".

Divisors: 1 2 4 449 898 1796 73019 146038 292076 32785531 65571062 131142124