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12540741 = 319220013
BaseRepresentation
bin101111110101…
…101101000101
3212121010122220
4233311231011
511202300431
61124442553
7211410633
oct57655505
925533586
1012540741
117096054
124249459
1327a1175
141946353
15117ab96
hexbf5b45

12540741 has 8 divisors (see below), whose sum is σ = 17601120. Its totient is φ = 7920432.

The previous prime is 12540739. The next prime is 12540751. The reversal of 12540741 is 14704521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12540741 - 21 = 12540739 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540751) 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, 109950 + ... + 110063.

It is an arithmetic number, because the mean of its divisors is an integer number (2200140).

Almost surely, 212540741 is an apocalyptic number.

It is an amenable number.

12540741 is a deficient number, since it is larger than the sum of its proper divisors (5060379).

12540741 is a wasteful number, since it uses less digits than its factorization.

12540741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220035.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 12540741 is about 3541.2908663367. The cubic root of 12540741 is about 232.3313055411.

The spelling of 12540741 in words is "twelve million, five hundred forty thousand, seven hundred forty-one".

Divisors: 1 3 19 57 220013 660039 4180247 12540741