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128141079 = 3113883063
BaseRepresentation
bin1111010001101…
…00011100010111
322221010020111220
413220310130113
5230301003304
620414301423
73114116103
oct750643427
9287106456
10128141079
1166372320
1236ab7873
1320717631
1413038903
15b3b2ad9
hex7a34717

128141079 has 8 divisors (see below), whose sum is σ = 186387072. Its totient is φ = 77661240.

The previous prime is 128141077. The next prime is 128141089. The reversal of 128141079 is 970141821.

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

It is not a de Polignac number, because 128141079 - 21 = 128141077 is a prime.

It is a super-2 number, since 2×1281410792 = 32840272254568482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 3883063 = 128141079 / (1 + 2 + 8 + 1 + 4 + 1 + 0 + 7 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128141077) 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, 1941499 + ... + 1941564.

It is an arithmetic number, because the mean of its divisors is an integer number (23298384).

Almost surely, 2128141079 is an apocalyptic number.

128141079 is a deficient number, since it is larger than the sum of its proper divisors (58245993).

128141079 is a wasteful number, since it uses less digits than its factorization.

128141079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883077.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 128141079 is about 11319.9416517931. The cubic root of 128141079 is about 504.1535065602.

The spelling of 128141079 in words is "one hundred twenty-eight million, one hundred forty-one thousand, seventy-nine".

Divisors: 1 3 11 33 3883063 11649189 42713693 128141079