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104142253 = 281370613
BaseRepresentation
bin1100011010100…
…01010110101101
321020221222022111
412031101112231
5203130023003
614200044021
72403123505
oct615212655
9236858274
10104142253
1153870686
122aa63611
1318764047
14db8ca05
159221e6d
hex63515ad

104142253 has 4 divisors (see below), whose sum is σ = 104513148. Its totient is φ = 103771360.

The previous prime is 104142251. The next prime is 104142263. The reversal of 104142253 is 352241401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352241401 = 768745823.

It can be written as a sum of positive squares in 2 ways, for example, as 33212169 + 70930084 = 5763^2 + 8422^2 .

It is a cyclic number.

It is not a de Polignac number, because 104142253 - 21 = 104142251 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 (104142251) 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, 185026 + ... + 185587.

It is an arithmetic number, because the mean of its divisors is an integer number (26128287).

Almost surely, 2104142253 is an apocalyptic number.

It is an amenable number.

104142253 is a deficient number, since it is larger than the sum of its proper divisors (370895).

104142253 is an equidigital number, since it uses as much as digits as its factorization.

104142253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370894.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 104142253 is about 10205.0111709885. The cubic root of 104142253 is about 470.4812529445.

Adding to 104142253 its reverse (352241401), we get a palindrome (456383654).

The spelling of 104142253 in words is "one hundred four million, one hundred forty-two thousand, two hundred fifty-three".

Divisors: 1 281 370613 104142253