1249729800 has 96 divisors (see below), whose sum is σ = 4226381280. Its totient is φ = 302963200.

The previous prime is 1249729777. The next prime is 1249729801. The reversal of 1249729800 is 89279421.

It is not an unprimeable number, because it can be changed into a prime (1249729801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88077 + ... + 101276.

It is an arithmetic number, because the mean of its divisors is an integer number (44024805).

Almost surely, 2^1249729800 is an apocalyptic number.

1249729800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1249729800 is an abundant number, since it is smaller than the sum of its proper divisors (2976651480).

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

1249729800 is a wasteful number, since it uses less digits than its factorization.

1249729800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189383 (or 189374 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 1249729800 is about 35351.5176477616. The cubic root of 1249729800 is about 1077.1397223223.

The spelling of 1249729800 in words is "one billion, two hundred forty-nine million, seven hundred twenty-nine thousand, eight hundred".