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126420130 = 2547268979
BaseRepresentation
bin1111000100100…
…00010010100010
322210212210211001
413202100102202
5224330421010
620313342214
73063360544
oct742202242
9283783731
10126420130
11653a7351
123640796a
1320264215
1412b0b694
15b172c3a
hex78904a2

126420130 has 16 divisors (see below), whose sum is σ = 232398720. Its totient is φ = 49491952.

The previous prime is 126420127. The next prime is 126420131. The reversal of 126420130 is 31024621.

It is a junction number, because it is equal to n+sod(n) for n = 126420098 and 126420107.

It is not an unprimeable number, because it can be changed into a prime (126420131) 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, 134020 + ... + 134959.

It is an arithmetic number, because the mean of its divisors is an integer number (14524920).

Almost surely, 2126420130 is an apocalyptic number.

126420130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126420130 is a deficient number, since it is larger than the sum of its proper divisors (105978590).

126420130 is a wasteful number, since it uses less digits than its factorization.

126420130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269033.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 126420130 is about 11243.6706639780. The cubic root of 126420130 is about 501.8863808512.

Adding to 126420130 its reverse (31024621), we get a palindrome (157444751).

The spelling of 126420130 in words is "one hundred twenty-six million, four hundred twenty thousand, one hundred thirty".

Divisors: 1 2 5 10 47 94 235 470 268979 537958 1344895 2689790 12642013 25284026 63210065 126420130