1478242729 has 4 divisors (see below), whose sum is σ = 1542514176. Its totient is φ = 1413971284.

The previous prime is 1478242679. The next prime is 1478242739. The reversal of 1478242729 is 9272428741.

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 1478242729 - 2⁹ = 1478242217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1478242739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32135689 + ... + 32135734.

It is an arithmetic number, because the mean of its divisors is an integer number (385628544).

Almost surely, 2^1478242729 is an apocalyptic number.

It is an amenable number.

1478242729 is a deficient number, since it is larger than the sum of its proper divisors (64271447).

1478242729 is an equidigital number, since it uses as much as digits as its factorization.

1478242729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64271446.

The product of its digits is 451584, while the sum is 46.

The square root of 1478242729 is about 38447.9222975703. The cubic root of 1478242729 is about 1139.1526300210.

The spelling of 1478242729 in words is "one billion, four hundred seventy-eight million, two hundred forty-two thousand, seven hundred twenty-nine".