1249054720 has 104 divisors (see below), whose sum is σ = 3043120320. Its totient is φ = 492011520.

The previous prime is 1249054717. The next prime is 1249054757. The reversal of 1249054720 is 274509421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1453651 + ... + 1454509.

Almost surely, 2^1249054720 is an apocalyptic number.

1249054720 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 1249054720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1521560160).

1249054720 is an abundant number, since it is smaller than the sum of its proper divisors (1794065600).

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

1249054720 is an frugal number, since it uses more digits than its factorization.

1249054720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 937 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1249054720 is about 35341.9682530557. The cubic root of 1249054720 is about 1076.9457373358.

The spelling of 1249054720 in words is "one billion, two hundred forty-nine million, fifty-four thousand, seven hundred twenty".