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124006939 = 7191934831
BaseRepresentation
bin1110110010000…
…11001000011011
322122100012112121
413121003020123
5223221210224
620145522111
73034020160
oct731031033
9278305477
10124006939
1163aa9281
1235643337
131c8ca9b4
1412680067
15ad47be4
hex764321b

124006939 has 16 divisors (see below), whose sum is σ = 149985280. Its totient is φ = 100154880.

The previous prime is 124006937. The next prime is 124006951. The reversal of 124006939 is 939600421.

It is not a de Polignac number, because 124006939 - 21 = 124006937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124006931) 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 15 ways as a sum of consecutive naturals, for example, 23254 + ... + 28084.

It is an arithmetic number, because the mean of its divisors is an integer number (9374080).

Almost surely, 2124006939 is an apocalyptic number.

124006939 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

124006939 is a deficient number, since it is larger than the sum of its proper divisors (25978341).

124006939 is a wasteful number, since it uses less digits than its factorization.

124006939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 124006939 is about 11135.8402915990. The cubic root of 124006939 is about 498.6723967257.

The spelling of 124006939 in words is "one hundred twenty-four million, six thousand, nine hundred thirty-nine".

Divisors: 1 7 19 133 193 1351 3667 4831 25669 33817 91789 642523 932383 6526681 17715277 124006939