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126130379 = 1919933359
BaseRepresentation
bin1111000010010…
…01100011001011
322210100002100112
413201021203023
5224242133004
620303224535
73061043024
oct741114313
9283302315
10126130379
1165219691
12362a814b
132019237b
1412a73c4b
15b116e6e
hex78498cb

126130379 has 8 divisors (see below), whose sum is σ = 133440000. Its totient is φ = 118887912.

The previous prime is 126130343. The next prime is 126130387. The reversal of 126130379 is 973031621.

It is a happy number.

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 126130379 - 212 = 126126283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126130339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12899 + ... + 20460.

It is an arithmetic number, because the mean of its divisors is an integer number (16680000).

Almost surely, 2126130379 is an apocalyptic number.

126130379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

126130379 is a deficient number, since it is larger than the sum of its proper divisors (7309621).

126130379 is a wasteful number, since it uses less digits than its factorization.

126130379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33577.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 126130379 is about 11230.7782009975. The cubic root of 126130379 is about 501.5026515527.

The spelling of 126130379 in words is "one hundred twenty-six million, one hundred thirty thousand, three hundred seventy-nine".

Divisors: 1 19 199 3781 33359 633821 6638441 126130379