1247109120 has 336 divisors, whose sum is σ = 4600346400. Its totient is φ = 311427072.

The previous prime is 1247109119. The next prime is 1247109131. The reversal of 1247109120 is 219017421.

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, 6266781 + ... + 6266979.

Almost surely, 2^1247109120 is an apocalyptic number.

1247109120 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 1247109120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2300173200).

1247109120 is an abundant number, since it is smaller than the sum of its proper divisors (3353237280).

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

1247109120 is a wasteful number, since it uses less digits than its factorization.

1247109120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1247109120 is about 35314.4321772275. The cubic root of 1247109120 is about 1076.3862757263.

The spelling of 1247109120 in words is "one billion, two hundred forty-seven million, one hundred nine thousand, one hundred twenty".