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126930231 = 3214103359
BaseRepresentation
bin1111001000011…
…00110100110111
322211211201112200
413210030310313
5224443231411
620332315543
73100613661
oct744146467
9284751480
10126930231
116571561a
1236612bb3
13203b245c
1412c01531
15b223e56
hex790cd37

126930231 has 6 divisors (see below), whose sum is σ = 183343680. Its totient is φ = 84620148.

The previous prime is 126930197. The next prime is 126930233. The reversal of 126930231 is 132039621.

It is not a de Polignac number, because 126930231 - 210 = 126929207 is a prime.

It is a super-2 number, since 2×1269302312 = 32222567083426722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126930195 and 126930204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126930233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7051671 + ... + 7051688.

It is an arithmetic number, because the mean of its divisors is an integer number (30557280).

Almost surely, 2126930231 is an apocalyptic number.

126930231 is a deficient number, since it is larger than the sum of its proper divisors (56413449).

126930231 is a wasteful number, since it uses less digits than its factorization.

126930231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14103365 (or 14103362 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 126930231 is about 11266.3317455150. The cubic root of 126930231 is about 502.5605065627.

Adding to 126930231 its reverse (132039621), we get a palindrome (258969852).

The spelling of 126930231 in words is "one hundred twenty-six million, nine hundred thirty thousand, two hundred thirty-one".

Divisors: 1 3 9 14103359 42310077 126930231