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125670130 = 2537339649
BaseRepresentation
bin1110111110110…
…01001011110010
322202110201000021
413133121023302
5224132421010
620245314054
73054115135
oct737311362
9282421007
10125670130
1164a34913
123610592a
1320060a31
141299421c
15b0758da
hex77d92f2

125670130 has 16 divisors (see below), whose sum is σ = 232320600. Its totient is φ = 48909312.

The previous prime is 125670121. The next prime is 125670131. The reversal of 125670130 is 31076521.

It can be written as a sum of positive squares in 4 ways, for example, as 125238481 + 431649 = 11191^2 + 657^2 .

It is a junction number, because it is equal to n+sod(n) for n = 125670095 and 125670104.

It is not an unprimeable number, because it can be changed into a prime (125670131) 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 7 ways as a sum of consecutive naturals, for example, 169455 + ... + 170194.

Almost surely, 2125670130 is an apocalyptic number.

125670130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125670130 is a deficient number, since it is larger than the sum of its proper divisors (106650470).

125670130 is a wasteful number, since it uses less digits than its factorization.

125670130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339693.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 125670130 is about 11210.2689530626. The cubic root of 125670130 is about 500.8919146970.

The spelling of 125670130 in words is "one hundred twenty-five million, six hundred seventy thousand, one hundred thirty".

Divisors: 1 2 5 10 37 74 185 370 339649 679298 1698245 3396490 12567013 25134026 62835065 125670130