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124380047 = 1111307277
BaseRepresentation
bin1110110100111…
…10001110001111
322200001011100102
413122132032033
5223320130142
620201521315
73040133021
oct732361617
9280034312
10124380047
1164233630
12357a323b
131c9cb77c
141273a011
15adbd532
hex769e38f

124380047 has 4 divisors (see below), whose sum is σ = 135687336. Its totient is φ = 113072760.

The previous prime is 124380013. The next prime is 124380071. The reversal of 124380047 is 740083421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 124380047 - 214 = 124363663 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 (124389047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5653628 + ... + 5653649.

It is an arithmetic number, because the mean of its divisors is an integer number (33921834).

Almost surely, 2124380047 is an apocalyptic number.

124380047 is a deficient number, since it is larger than the sum of its proper divisors (11307289).

124380047 is a wasteful number, since it uses less digits than its factorization.

124380047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11307288.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 124380047 is about 11152.5802844006. The cubic root of 124380047 is about 499.1720256738.

The spelling of 124380047 in words is "one hundred twenty-four million, three hundred eighty thousand, forty-seven".

Divisors: 1 11 11307277 124380047