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57742781142 = 239623796857
BaseRepresentation
bin110101110001101111…
…001110101011010110
312112001012020012120210
4311301233032223112
51421224122444032
642305432110250
74112630353464
oct656157165326
9175035205523
1057742781142
1122541327132
12b235b35386
1355a2c13727
142b1ab9d834
15177e4d22cc
hexd71bcead6

57742781142 has 8 divisors (see below), whose sum is σ = 115485562296. Its totient is φ = 19247593712.

The previous prime is 57742781137. The next prime is 57742781147. The reversal of 57742781142 is 24118724775.

It is an interprime number because it is at equal distance from previous prime (57742781137) and next prime (57742781147).

It is a sphenic number, since it is the product of 3 distinct primes.

57742781142 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 57742781091 and 57742781100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57742781147) 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, 4811898423 + ... + 4811898434.

It is an arithmetic number, because the mean of its divisors is an integer number (14435695287).

Almost surely, 257742781142 is an apocalyptic number.

57742781142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57742781142 is a wasteful number, since it uses less digits than its factorization.

57742781142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9623796862.

The product of its digits is 878080, while the sum is 48.

The spelling of 57742781142 in words is "fifty-seven billion, seven hundred forty-two million, seven hundred eighty-one thousand, one hundred forty-two".

Divisors: 1 2 3 6 9623796857 19247593714 28871390571 57742781142