1245534400 has 84 divisors (see below), whose sum is σ = 3343457880. Its totient is φ = 452915200.

The previous prime is 1245534391. The next prime is 1245534403. The reversal of 1245534400 is 44355421.

It is not an unprimeable number, because it can be changed into a prime (1245534403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17785 + ... + 52984.

It is an arithmetic number, because the mean of its divisors is an integer number (39803070).

Almost surely, 2^1245534400 is an apocalyptic number.

1245534400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245534400 is an abundant number, since it is smaller than the sum of its proper divisors (2097923480).

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

1245534400 is a wasteful number, since it uses less digits than its factorization.

1245534400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70802 (or 70787 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1245534400 is about 35292.1294341954. The cubic root of 1245534400 is about 1075.9330352691.

Adding to 1245534400 its reverse (44355421), we get a palindrome (1289889821).

The spelling of 1245534400 in words is "one billion, two hundred forty-five million, five hundred thirty-four thousand, four hundred".