1257130708 has 6 divisors (see below), whose sum is σ = 2199978746. Its totient is φ = 628565352.

The previous prime is 1257130703. The next prime is 1257130723. The reversal of 1257130708 is 8070317521.

It can be written as a sum of positive squares in only one way, i.e., 1224160144 + 32970564 = 34988^2 + 5742^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257130703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157141335 + ... + 157141342.

Almost surely, 2^1257130708 is an apocalyptic number.

It is an amenable number.

1257130708 is a deficient number, since it is larger than the sum of its proper divisors (942848038).

1257130708 is a wasteful number, since it uses less digits than its factorization.

1257130708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314282681 (or 314282679 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 1257130708 is about 35456.0390906824. The cubic root of 1257130708 is about 1079.2618149493.

The spelling of 1257130708 in words is "one billion, two hundred fifty-seven million, one hundred thirty thousand, seven hundred eight".