1212449241 has 4 divisors (see below), whose sum is σ = 1616598992. Its totient is φ = 808299492.

The previous prime is 1212449239. The next prime is 1212449243. The reversal of 1212449241 is 1429442121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1429442121 = 3 ⋅476480707.

It is an interprime number because it is at equal distance from previous prime (1212449239) and next prime (1212449243).

It is not a de Polignac number, because 1212449241 - 2¹ = 1212449239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212449199 and 1212449208.

It is not an unprimeable number, because it can be changed into a prime (1212449243) 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 3 ways as a sum of consecutive naturals, for example, 202074871 + ... + 202074876.

It is an arithmetic number, because the mean of its divisors is an integer number (404149748).

Almost surely, 2^1212449241 is an apocalyptic number.

It is an amenable number.

1212449241 is a deficient number, since it is larger than the sum of its proper divisors (404149751).

1212449241 is an equidigital number, since it uses as much as digits as its factorization.

1212449241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404149750.

The product of its digits is 4608, while the sum is 30.

The square root of 1212449241 is about 34820.2418285686. The cubic root of 1212449241 is about 1066.3207375097.

The spelling of 1212449241 in words is "one billion, two hundred twelve million, four hundred forty-nine thousand, two hundred forty-one".