1249010220 has 96 divisors (see below), whose sum is σ = 3689441280. Its totient is φ = 314841600.

The previous prime is 1249010177. The next prime is 1249010249. The reversal of 1249010220 is 220109421.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 684229 + ... + 686051.

It is an arithmetic number, because the mean of its divisors is an integer number (38431680).

Almost surely, 2^1249010220 is an apocalyptic number.

1249010220 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 1249010220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1844720640).

1249010220 is an abundant number, since it is smaller than the sum of its proper divisors (2440431060).

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

1249010220 is a wasteful number, since it uses less digits than its factorization.

1249010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455 (or 2453 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1249010220 is about 35341.3386843226. The cubic root of 1249010220 is about 1076.9329477562.

Adding to 1249010220 its reverse (220109421), we get a palindrome (1469119641).

The spelling of 1249010220 in words is "one billion, two hundred forty-nine million, ten thousand, two hundred twenty".