1247434264 has 8 divisors (see below), whose sum is σ = 2338939260. Its totient is φ = 623717128.

The previous prime is 1247434261. The next prime is 1247434271. The reversal of 1247434264 is 4624347421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247434261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77964634 + ... + 77964649.

Almost surely, 2^1247434264 is an apocalyptic number.

It is an amenable number.

1247434264 is a deficient number, since it is larger than the sum of its proper divisors (1091504996).

1247434264 is a wasteful number, since it uses less digits than its factorization.

1247434264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155929289 (or 155929285 counting only the distinct ones).

The product of its digits is 129024, while the sum is 37.

The square root of 1247434264 is about 35319.0354341678. The cubic root of 1247434264 is about 1076.4798120824.

The spelling of 1247434264 in words is "one billion, two hundred forty-seven million, four hundred thirty-four thousand, two hundred sixty-four".