1247115132 has 18 divisors (see below), whose sum is σ = 3152430008. Its totient is φ = 415705032.

The previous prime is 1247115113. The next prime is 1247115143. The reversal of 1247115132 is 2315117421.

1247115132 is a `hidden beast` number, since 12 + 471 + 151 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 1247115096 and 1247115105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17321008 + ... + 17321079.

Almost surely, 2^1247115132 is an apocalyptic number.

1247115132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1247115132 is an abundant number, since it is smaller than the sum of its proper divisors (1905314876).

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

1247115132 is a wasteful number, since it uses less digits than its factorization.

1247115132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34642097 (or 34642092 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 1247115132 is about 35314.5172981311. The cubic root of 1247115132 is about 1076.3880053862.

The spelling of 1247115132 in words is "one billion, two hundred forty-seven million, one hundred fifteen thousand, one hundred thirty-two".