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7421054125 = 5361973253
BaseRepresentation
bin1101110100101010…
…00100110010101101
3201011012000121110111
412322111010302231
5110144242213000
63224214540021
7351620630212
oct67225046255
921135017414
107421054125
113168a9a891
121531367611
139136096b4
14505841b09
152d678acba
hex1ba544cad

7421054125 has 16 divisors (see below), whose sum is σ = 9413312688. Its totient is φ = 5839512000.

The previous prime is 7421054101. The next prime is 7421054131. The reversal of 7421054125 is 5214501247.

It can be written as a sum of positive squares in 8 ways, for example, as 5392992969 + 2028061156 = 73437^2 + 45034^2 .

It is a de Polignac number, because none of the positive numbers 2k-7421054125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479002 + ... + 494251.

It is an arithmetic number, because the mean of its divisors is an integer number (588332043).

Almost surely, 27421054125 is an apocalyptic number.

It is an amenable number.

7421054125 is a deficient number, since it is larger than the sum of its proper divisors (1992258563).

7421054125 is an equidigital number, since it uses as much as digits as its factorization.

7421054125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973329 (or 973319 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 7421054125 is about 86145.5403662894. The cubic root of 7421054125 is about 1950.5415217491.

The spelling of 7421054125 in words is "seven billion, four hundred twenty-one million, fifty-four thousand, one hundred twenty-five".

Divisors: 1 5 25 61 125 305 1525 7625 973253 4866265 24331325 59368433 121656625 296842165 1484210825 7421054125