1247124480 has 264 divisors, whose sum is σ = 4642890768. Its totient is φ = 284884992.

The previous prime is 1247124433. The next prime is 1247124491. The reversal of 1247124480 is 844217421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 751812 + ... + 753468.

Almost surely, 2^1247124480 is an apocalyptic number.

1247124480 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 1247124480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2321445384).

1247124480 is an abundant number, since it is smaller than the sum of its proper divisors (3395766288).

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

1247124480 is a wasteful number, since it uses less digits than its factorization.

1247124480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 1247124480 is about 35314.6496513841. The cubic root of 1247124480 is about 1076.3906948064.

The spelling of 1247124480 in words is "one billion, two hundred forty-seven million, one hundred twenty-four thousand, four hundred eighty".