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142131339979 = 1937202178293
BaseRepresentation
bin1000010001011110110…
…0000010001011001011
3111120212101012011112221
42010113230002023023
54312041110334404
6145143315514511
713161101312326
oct2042754021313
9446771164487
10142131339979
1155306488442
12236675b8a37
1310531303a05
146c447157bd
153a6cdc9954
hex2117b022cb

142131339979 has 8 divisors (see below), whose sum is σ = 153655503440. Its totient is φ = 131011533216.

The previous prime is 142131339929. The next prime is 142131340007. The reversal of 142131339979 is 979933131241.

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

It is a cyclic number.

It is not a de Polignac number, because 142131339979 - 27 = 142131339851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142131339929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101088444 + ... + 101089849.

It is an arithmetic number, because the mean of its divisors is an integer number (19206937930).

Almost surely, 2142131339979 is an apocalyptic number.

142131339979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

142131339979 is a deficient number, since it is larger than the sum of its proper divisors (11524163461).

142131339979 is a wasteful number, since it uses less digits than its factorization.

142131339979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202178349.

The product of its digits is 1102248, while the sum is 52.

The spelling of 142131339979 in words is "one hundred forty-two billion, one hundred thirty-one million, three hundred thirty-nine thousand, nine hundred seventy-nine".

Divisors: 1 19 37 703 202178293 3841387567 7480596841 142131339979