1247714149 has 4 divisors (see below), whose sum is σ = 1361142720. Its totient is φ = 1134285580.

The previous prime is 1247714147. The next prime is 1247714177. The reversal of 1247714149 is 9414177421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1247714149 - 2¹ = 1247714147 is a prime.

It is a super-2 number, since 2×1247714149² = 3113581195229588402, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247714141) by changing a digit.

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, 56714269 + ... + 56714290.

It is an arithmetic number, because the mean of its divisors is an integer number (340285680).

Almost surely, 2^1247714149 is an apocalyptic number.

It is an amenable number.

1247714149 is a deficient number, since it is larger than the sum of its proper divisors (113428571).

1247714149 is a wasteful number, since it uses less digits than its factorization.

1247714149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113428570.

The product of its digits is 56448, while the sum is 40.

The square root of 1247714149 is about 35322.9974520850. The cubic root of 1247714149 is about 1076.5603154618.

The spelling of 1247714149 in words is "one billion, two hundred forty-seven million, seven hundred fourteen thousand, one hundred forty-nine".