1247117330 has 16 divisors (see below), whose sum is σ = 2271858624. Its totient is φ = 492836400.

The previous prime is 1247117303. The next prime is 1247117351. The reversal of 1247117330 is 337117421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1247117293 and 1247117302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750446 + ... + 752105.

It is an arithmetic number, because the mean of its divisors is an integer number (141991164).

Almost surely, 2^1247117330 is an apocalyptic number.

1247117330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1247117330 is a deficient number, since it is larger than the sum of its proper divisors (1024741294).

1247117330 is a wasteful number, since it uses less digits than its factorization.

1247117330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502641.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 1247117330 is about 35314.5484184635. The cubic root of 1247117330 is about 1076.3886377522.

Subtracting from 1247117330 its reverse (337117421), we obtain a palindrome (909999909).

The spelling of 1247117330 in words is "one billion, two hundred forty-seven million, one hundred seventeen thousand, three hundred thirty".