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124982005 = 531778853
BaseRepresentation
bin1110111001100…
…01001011110101
322201011202002011
413130301023311
5223443411010
620222444221
73045221011
oct734611365
9281152064
10124982005
1164604915
1235a33671
131cb7c765
1412855541
15ae8ba8a
hex77312f5

124982005 has 8 divisors (see below), whose sum is σ = 150453432. Its totient is φ = 99668928.

The previous prime is 124981999. The next prime is 124982009. The reversal of 124982005 is 500289421.

It can be written as a sum of positive squares in 4 ways, for example, as 7107556 + 117874449 = 2666^2 + 10857^2 .

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 124982005 - 225 = 91427573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124982009) 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, 37842 + ... + 41011.

It is an arithmetic number, because the mean of its divisors is an integer number (18806679).

Almost surely, 2124982005 is an apocalyptic number.

It is an amenable number.

124982005 is a deficient number, since it is larger than the sum of its proper divisors (25471427).

124982005 is an equidigital number, since it uses as much as digits as its factorization.

124982005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79175.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 124982005 is about 11179.5350976684. The cubic root of 124982005 is about 499.9760055152.

The spelling of 124982005 in words is "one hundred twenty-four million, nine hundred eighty-two thousand, five".

Divisors: 1 5 317 1585 78853 394265 24996401 124982005