12151243 has 8 divisors (see below), whose sum is σ = 13855968. Its totient is φ = 10556544.

The previous prime is 12151231. The next prime is 12151247. The reversal of 12151243 is 34215121.

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

It is a cyclic number.

It is not a de Polignac number, because 12151243 - 2²¹ = 10054091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12151243.

It is not an unprimeable number, because it can be changed into a prime (12151247) 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, 27271 + ... + 27712.

It is an arithmetic number, because the mean of its divisors is an integer number (1731996).

Almost surely, 2^12151243 is an apocalyptic number.

12151243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12151243 is a deficient number, since it is larger than the sum of its proper divisors (1704725).

12151243 is a wasteful number, since it uses less digits than its factorization.

12151243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55013.

The product of its digits is 240, while the sum is 19.

The square root of 12151243 is about 3485.8633077044. The cubic root of 12151243 is about 229.9006691431.

Adding to 12151243 its reverse (34215121), we get a palindrome (46366364).

The spelling of 12151243 in words is "twelve million, one hundred fifty-one thousand, two hundred forty-three".