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12125243 = 1335519
BaseRepresentation
bin101110010000…
…010000111011
3211211000201002
4232100100323
511101001433
61111515215
7205030364
oct56202073
924730632
1012125243
116931969
124088b0b
132687000
141878b6b
1510e79e8
hexb9043b

12125243 has 8 divisors (see below), whose sum is σ = 13137600. Its totient is φ = 11190504.

The previous prime is 12125237. The next prime is 12125251. The reversal of 12125243 is 34252121.

It is not a de Polignac number, because 12125243 - 212 = 12121147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12125273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563 + ... + 4956.

It is an arithmetic number, because the mean of its divisors is an integer number (1642200).

Almost surely, 212125243 is an apocalyptic number.

12125243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12125243 is a deficient number, since it is larger than the sum of its proper divisors (1012357).

12125243 is an frugal number, since it uses more digits than its factorization.

12125243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558 (or 5532 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 12125243 is about 3482.1319618877. The cubic root of 12125243 is about 229.7365793249.

Adding to 12125243 its reverse (34252121), we get a palindrome (46377364).

The spelling of 12125243 in words is "twelve million, one hundred twenty-five thousand, two hundred forty-three".

Divisors: 1 13 169 2197 5519 71747 932711 12125243