1247147126 has 8 divisors (see below), whose sum is σ = 1877378904. Its totient is φ = 621354160.

The previous prime is 1247147063. The next prime is 1247147131. The reversal of 1247147126 is 6217417421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109000 + ... + 1110123.

It is an arithmetic number, because the mean of its divisors is an integer number (234672363).

Almost surely, 2^1247147126 is an apocalyptic number.

1247147126 is a deficient number, since it is larger than the sum of its proper divisors (630231778).

1247147126 is a wasteful number, since it uses less digits than its factorization.

1247147126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219406.

The product of its digits is 18816, while the sum is 35.

The square root of 1247147126 is about 35314.9702817375. The cubic root of 1247147126 is about 1076.3972100064.

The spelling of 1247147126 in words is "one billion, two hundred forty-seven million, one hundred forty-seven thousand, one hundred twenty-six".