1247680134 has 24 divisors (see below), whose sum is σ = 2728575720. Its totient is φ = 412005888.

The previous prime is 1247680127. The next prime is 1247680193. The reversal of 1247680134 is 4310867421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321979 + ... + 325830.

It is an arithmetic number, because the mean of its divisors is an integer number (113690655).

Almost surely, 2^1247680134 is an apocalyptic number.

1247680134 is an abundant number, since it is smaller than the sum of its proper divisors (1480895586).

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

1247680134 is a wasteful number, since it uses less digits than its factorization.

1247680134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647924 (or 647921 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1247680134 is about 35322.5159636173. The cubic root of 1247680134 is about 1076.5505323632.

The spelling of 1247680134 in words is "one billion, two hundred forty-seven million, six hundred eighty thousand, one hundred thirty-four".