1247135332 has 12 divisors (see below), whose sum is σ = 2252889856. Its totient is φ = 603452520.

The previous prime is 1247135311. The next prime is 1247135347. The reversal of 1247135332 is 2335317421.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 1247135294 and 1247135303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5028648 + ... + 5028895.

Almost surely, 2^1247135332 is an apocalyptic number.

It is an amenable number.

1247135332 is a deficient number, since it is larger than the sum of its proper divisors (1005754524).

1247135332 is a wasteful number, since it uses less digits than its factorization.

1247135332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10057578 (or 10057576 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 1247135332 is about 35314.8032983337. The cubic root of 1247135332 is about 1076.3938169107.

The spelling of 1247135332 in words is "one billion, two hundred forty-seven million, one hundred thirty-five thousand, three hundred thirty-two".