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126414905 = 525282981
BaseRepresentation
bin1111000100011…
…11000000111001
322210212112122112
413202033000321
5224330234110
620313302105
73063336401
oct742170071
9283775575
10126414905
11653a3431
1236404935
1320261a26
1412b09801
15b171405
hex788f039

126414905 has 4 divisors (see below), whose sum is σ = 151697892. Its totient is φ = 101131920.

The previous prime is 126414901. The next prime is 126414917. The reversal of 126414905 is 509414621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 509414621 = 1097946399.

It can be written as a sum of positive squares in 2 ways, for example, as 51955264 + 74459641 = 7208^2 + 8629^2 .

It is not a de Polignac number, because 126414905 - 22 = 126414901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126414901) 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 3 ways as a sum of consecutive naturals, for example, 12641486 + ... + 12641495.

It is an arithmetic number, because the mean of its divisors is an integer number (37924473).

Almost surely, 2126414905 is an apocalyptic number.

It is an amenable number.

126414905 is a deficient number, since it is larger than the sum of its proper divisors (25282987).

126414905 is an equidigital number, since it uses as much as digits as its factorization.

126414905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25282986.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 126414905 is about 11243.4383086314. The cubic root of 126414905 is about 501.8794663604.

The spelling of 126414905 in words is "one hundred twenty-six million, four hundred fourteen thousand, nine hundred five".

Divisors: 1 5 25282981 126414905