12140545 has 8 divisors (see below), whose sum is σ = 14604480. Its totient is φ = 9688560.

The previous prime is 12140543. The next prime is 12140549. The reversal of 12140545 is 54504121.

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

It is not a de Polignac number, because 12140545 - 2¹ = 12140543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12140543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571 + ... + 4960.

It is an arithmetic number, because the mean of its divisors is an integer number (1825560).

It is a Proth number, since it is equal to 741 ⋅ 2¹⁴ + 1 and 741 < 2¹⁴.

Almost surely, 2^12140545 is an apocalyptic number.

It is an amenable number.

12140545 is a deficient number, since it is larger than the sum of its proper divisors (2463935).

12140545 is an equidigital number, since it uses as much as digits as its factorization.

12140545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 12140545 is about 3484.3284862366. The cubic root of 12140545 is about 229.8331808626.

Adding to 12140545 its reverse (54504121), we get a palindrome (66644666).

The spelling of 12140545 in words is "twelve million, one hundred forty thousand, five hundred forty-five".