1247416345 has 16 divisors (see below), whose sum is σ = 1711721088. Its totient is φ = 854881920.

The previous prime is 1247416301. The next prime is 1247416351. The reversal of 1247416345 is 5436147421.

It is a de Polignac number, because none of the positive numbers 2^k-1247416345 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58357 + ... + 76813.

It is an arithmetic number, because the mean of its divisors is an integer number (106982568).

Almost surely, 2^1247416345 is an apocalyptic number.

It is an amenable number.

1247416345 is a deficient number, since it is larger than the sum of its proper divisors (464304743).

1247416345 is a wasteful number, since it uses less digits than its factorization.

1247416345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20400.

The product of its digits is 80640, while the sum is 37.

The square root of 1247416345 is about 35318.7817598512. The cubic root of 1247416345 is about 1076.4746576267.

The spelling of 1247416345 in words is "one billion, two hundred forty-seven million, four hundred sixteen thousand, three hundred forty-five".