1245454100 has 72 divisors (see below), whose sum is σ = 2955540000. Its totient is φ = 451785600.

The previous prime is 1245454043. The next prime is 1245454139. The reversal of 1245454100 is 14545421.

It is a self number, because there is not a number n which added to its sum of digits gives 1245454100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 547766 + ... + 550034.

Almost surely, 2^1245454100 is an apocalyptic number.

1245454100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245454100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1477770000).

1245454100 is an abundant number, since it is smaller than the sum of its proper divisors (1710085900).

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

1245454100 is a wasteful number, since it uses less digits than its factorization.

1245454100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793 (or 2786 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1245454100 is about 35290.9917684386. The cubic root of 1245454100 is about 1075.9099128569.

Adding to 1245454100 its reverse (14545421), we get a palindrome (1259999521).

The spelling of 1245454100 in words is "one billion, two hundred forty-five million, four hundred fifty-four thousand, one hundred".