1241231445 has 40 divisors (see below), whose sum is σ = 2228355360. Its totient is φ = 660998880.

The previous prime is 1241231441. The next prime is 1241231461. The reversal of 1241231445 is 5441321421.

It is not a de Polignac number, because 1241231445 - 2² = 1241231441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241231441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 326566 + ... + 330344.

It is an arithmetic number, because the mean of its divisors is an integer number (55708884).

Almost surely, 2^1241231445 is an apocalyptic number.

1241231445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1241231445 is a deficient number, since it is larger than the sum of its proper divisors (987123915).

1241231445 is an equidigital number, since it uses as much as digits as its factorization.

1241231445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607 (or 4598 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1241231445 is about 35231.1147283193. The cubic root of 1241231445 is about 1074.6925949951.

Adding to 1241231445 its reverse (5441321421), we get a palindrome (6682552866).

The spelling of 1241231445 in words is "one billion, two hundred forty-one million, two hundred thirty-one thousand, four hundred forty-five".