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12103041478 = 211550138249
BaseRepresentation
bin10110100010110010…
…11100000111000110
31011020111000012200111
423101121130013012
5144241334311403
65320550103234
7605632104133
oct132131340706
934214005614
1012103041478
115150940220
12241934ab1a
1311ab601808
1482b5a158a
154ac82656d
hex2d165c1c6

12103041478 has 8 divisors (see below), whose sum is σ = 19804977000. Its totient is φ = 5501382480.

The previous prime is 12103041463. The next prime is 12103041479. The reversal of 12103041478 is 87414030121.

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

It is a super-2 number, since 2×121030414782 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103041479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275069103 + ... + 275069146.

It is an arithmetic number, because the mean of its divisors is an integer number (2475622125).

Almost surely, 212103041478 is an apocalyptic number.

12103041478 is a deficient number, since it is larger than the sum of its proper divisors (7701935522).

12103041478 is a wasteful number, since it uses less digits than its factorization.

12103041478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550138262.

The product of its (nonzero) digits is 5376, while the sum is 31.

Adding to 12103041478 its reverse (87414030121), we get a palindrome (99517071599).

The spelling of 12103041478 in words is "twelve billion, one hundred three million, forty-one thousand, four hundred seventy-eight".

Divisors: 1 2 11 22 550138249 1100276498 6051520739 12103041478