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131242754 = 2178346507
BaseRepresentation
bin1111101001010…
…01101100000010
3100010221211012202
413310221230002
5232044232004
621004553202
73152354636
oct764515402
9303854182
10131242754
11680a0695
1237b52802
1321262346
1413604dc6
15b7c6b1e
hex7d29b02

131242754 has 16 divisors (see below), whose sum is σ = 210960288. Its totient is φ = 61015872.

The previous prime is 131242739. The next prime is 131242757. The reversal of 131242754 is 457242131.

131242754 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×1312427543 (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (131242757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20432 + ... + 26075.

It is an arithmetic number, because the mean of its divisors is an integer number (13185018).

Almost surely, 2131242754 is an apocalyptic number.

131242754 is a deficient number, since it is larger than the sum of its proper divisors (79717534).

131242754 is a wasteful number, since it uses less digits than its factorization.

131242754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46609.

The product of its digits is 6720, while the sum is 29.

The square root of 131242754 is about 11456.1229916582. The cubic root of 131242754 is about 508.1888260982.

Adding to 131242754 its reverse (457242131), we get a palindrome (588484885).

The spelling of 131242754 in words is "one hundred thirty-one million, two hundred forty-two thousand, seven hundred fifty-four".

Divisors: 1 2 17 34 83 166 1411 2822 46507 93014 790619 1581238 3860081 7720162 65621377 131242754