1247040304 has 40 divisors (see below), whose sum is σ = 2627430048. Its totient is φ = 570977280.

The previous prime is 1247040293. The next prime is 1247040313. The reversal of 1247040304 is 4030407421.

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, 51892 + ... + 72019.

Almost surely, 2^1247040304 is an apocalyptic number.

It is an amenable number.

1247040304 is an abundant number, since it is smaller than the sum of its proper divisors (1380389744).

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

1247040304 is a wasteful number, since it uses less digits than its factorization.

1247040304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123973 (or 123967 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 1247040304 is about 35313.4578312575. The cubic root of 1247040304 is about 1076.3664768813.

Adding to 1247040304 its reverse (4030407421), we get a palindrome (5277447725).

The spelling of 1247040304 in words is "one billion, two hundred forty-seven million, forty thousand, three hundred four".