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42879278141 = 721619540511
BaseRepresentation
bin100111111011110011…
…011101110000111101
311002200022221000120122
4213323303131300331
51200304043400031
631410511424325
73045405564500
oct477363356075
9132608830518
1042879278141
1117204264357
1283882250a5
13407474943b
14210ab4b137
1511ae68147b
hex9fbcddc3d

42879278141 has 12 divisors (see below), whose sum is σ = 49910878080. Its totient is φ = 36730897560.

The previous prime is 42879278137. The next prime is 42879278159. The reversal of 42879278141 is 14187297824.

It is not a de Polignac number, because 42879278141 - 22 = 42879278137 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42879278131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190925 + ... + 349586.

It is an arithmetic number, because the mean of its divisors is an integer number (4159239840).

Almost surely, 242879278141 is an apocalyptic number.

It is an amenable number.

42879278141 is a deficient number, since it is larger than the sum of its proper divisors (7031599939).

42879278141 is a wasteful number, since it uses less digits than its factorization.

42879278141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542144 (or 542137 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 53.

The spelling of 42879278141 in words is "forty-two billion, eight hundred seventy-nine million, two hundred seventy-eight thousand, one hundred forty-one".

Divisors: 1 7 49 1619 11333 79331 540511 3783577 26485039 875087309 6125611163 42879278141