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54132140 = 22519142453
BaseRepresentation
bin1100111001111…
…1110110101100
310202212012100002
43032133312230
5102324212030
65212123432
71225054436
oct316376654
9122765302
1054132140
1128613307
1216166578
13b2a416a
147291656
154b44245
hex339fdac

54132140 has 24 divisors (see below), whose sum is σ = 119661360. Its totient is φ = 20513088.

The previous prime is 54132139. The next prime is 54132149. The reversal of 54132140 is 4123145.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (54132149) 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 7 ways as a sum of consecutive naturals, for example, 70847 + ... + 71606.

It is an arithmetic number, because the mean of its divisors is an integer number (4985890).

Almost surely, 254132140 is an apocalyptic number.

It is an amenable number.

54132140 is an abundant number, since it is smaller than the sum of its proper divisors (65529220).

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

54132140 is a wasteful number, since it uses less digits than its factorization.

54132140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142481 (or 142479 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 54132140 is about 7357.4547229324. The cubic root of 54132140 is about 378.2843711772.

Adding to 54132140 its reverse (4123145), we get a palindrome (58255285).

The spelling of 54132140 in words is "fifty-four million, one hundred thirty-two thousand, one hundred forty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 142453 284906 569812 712265 1424530 2706607 2849060 5413214 10826428 13533035 27066070 54132140