1247329120 has 24 divisors (see below), whose sum is σ = 2946815424. Its totient is φ = 498931584.

The previous prime is 1247329091. The next prime is 1247329133. The reversal of 1247329120 is 219237421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3897744 + ... + 3898063.

It is an arithmetic number, because the mean of its divisors is an integer number (122783976).

Almost surely, 2^1247329120 is an apocalyptic number.

1247329120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1247329120 is an abundant number, since it is smaller than the sum of its proper divisors (1699486304).

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

1247329120 is an equidigital number, since it uses as much as digits as its factorization.

1247329120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7795822 (or 7795814 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1247329120 is about 35317.5469136802. The cubic root of 1247329120 is about 1076.4495663808.

The spelling of 1247329120 in words is "one billion, two hundred forty-seven million, three hundred twenty-nine thousand, one hundred twenty".