12146239 has 8 divisors (see below), whose sum is σ = 13903488. Its totient is φ = 10394520.

The previous prime is 12146221. The next prime is 12146287. The reversal of 12146239 is 93264121.

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 12146239 - 2¹³ = 12138047 is a prime.

It is a super-2 number, since 2×12146239² = 295062243690242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12146039) 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, 5904 + ... + 7690.

It is an arithmetic number, because the mean of its divisors is an integer number (1737936).

Almost surely, 2^12146239 is an apocalyptic number.

12146239 is a deficient number, since it is larger than the sum of its proper divisors (1757249).

12146239 is an equidigital number, since it uses as much as digits as its factorization.

12146239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765.

The product of its digits is 2592, while the sum is 28.

The square root of 12146239 is about 3485.1454775949. The cubic root of 12146239 is about 229.8691063666.

It can be divided in two parts, 121 and 46239, that added together give a triangular number (46360 = T₃₀₄).

The spelling of 12146239 in words is "twelve million, one hundred forty-six thousand, two hundred thirty-nine".