612015243 has 32 divisors (see below), whose sum is σ = 965145600. Its totient is φ = 344756160.

The previous prime is 612015227. The next prime is 612015263. The reversal of 612015243 is 342510216.

612015243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 612015243 - 2⁴ = 612015227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612015223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68871 + ... + 77247.

It is an arithmetic number, because the mean of its divisors is an integer number (30160800).

Almost surely, 2^612015243 is an apocalyptic number.

612015243 is a deficient number, since it is larger than the sum of its proper divisors (353130357).

612015243 is an equidigital number, since it uses as much as digits as its factorization.

612015243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8472 (or 8458 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 612015243 is about 24738.9418326654. The cubic root of 612015243 is about 849.0255236146.

Adding to 612015243 its reverse (342510216), we get a palindrome (954525459).

The spelling of 612015243 in words is "six hundred twelve million, fifteen thousand, two hundred forty-three".