1145212544 has 32 divisors (see below), whose sum is σ = 2607405600. Its totient is φ = 490804992.

The previous prime is 1145212543. The next prime is 1145212553. The reversal of 1145212544 is 4452125411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1145212543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638174 + ... + 639965.

It is an arithmetic number, because the mean of its divisors is an integer number (81481425).

Almost surely, 2^1145212544 is an apocalyptic number.

1145212544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1145212544 is an abundant number, since it is smaller than the sum of its proper divisors (1462193056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145212544 is an equidigital number, since it uses as much as digits as its factorization.

1145212544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278160 (or 1278148 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

The square root of 1145212544 is about 33840.9891108401. The cubic root of 1145212544 is about 1046.2336853450.

Adding to 1145212544 its reverse (4452125411), we get a palindrome (5597337955).

The spelling of 1145212544 in words is "one billion, one hundred forty-five million, two hundred twelve thousand, five hundred forty-four".