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42143140240 = 2451399376547
BaseRepresentation
bin100111001111111011…
…010100100110010000
311000210000202100012221
4213033323110212100
51142302120441430
631205453430424
73021226532035
oct471773244620
9130700670187
1042143140240
1116966782023
12820179b414
133c88096396
14207b08738c
151169c2157a
hex9cfed4990

42143140240 has 40 divisors (see below), whose sum is σ = 98053099200. Its totient is φ = 16845161856.

The previous prime is 42143140157. The next prime is 42143140241. The reversal of 42143140240 is 4204134124.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (42143140241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76354 + ... + 300193.

It is an arithmetic number, because the mean of its divisors is an integer number (2451327480).

Almost surely, 242143140240 is an apocalyptic number.

42143140240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42143140240 is an abundant number, since it is smaller than the sum of its proper divisors (55909958960).

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

42143140240 is a wasteful number, since it uses less digits than its factorization.

42143140240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377959 (or 377953 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 42143140240 its reverse (4204134124), we get a palindrome (46347274364).

The spelling of 42143140240 in words is "forty-two billion, one hundred forty-three million, one hundred forty thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1399 2798 5596 6995 11192 13990 22384 27980 55960 111920 376547 753094 1506188 1882735 3012376 3765470 6024752 7530940 15061880 30123760 526789253 1053578506 2107157012 2633946265 4214314024 5267892530 8428628048 10535785060 21071570120 42143140240