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12542053 = 21375869
BaseRepresentation
bin101111110110…
…000001100101
3212121012110111
4233312001211
511202321203
61124453021
7211414516
oct57660145
925535414
1012542053
117097037
12424a171
1327a1944
141946a0d
15117b26d
hexbf6065

12542053 has 4 divisors (see below), whose sum is σ = 12550060. Its totient is φ = 12534048.

The previous prime is 12542029. The next prime is 12542059. The reversal of 12542053 is 35024521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 35024521 = 75003503.

It can be written as a sum of positive squares in 2 ways, for example, as 859329 + 11682724 = 927^2 + 3418^2 .

It is a cyclic number.

It is not a de Polignac number, because 12542053 - 25 = 12542021 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 (12542059) 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 3 ways as a sum of consecutive naturals, for example, 798 + ... + 5071.

It is an arithmetic number, because the mean of its divisors is an integer number (3137515).

Almost surely, 212542053 is an apocalyptic number.

It is an amenable number.

12542053 is a deficient number, since it is larger than the sum of its proper divisors (8007).

12542053 is an equidigital number, since it uses as much as digits as its factorization.

12542053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8006.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 12542053 is about 3541.4761046773. The cubic root of 12542053 is about 232.3394073495.

Adding to 12542053 its reverse (35024521), we get a palindrome (47566574).

The spelling of 12542053 in words is "twelve million, five hundred forty-two thousand, fifty-three".

Divisors: 1 2137 5869 12542053