1478421771 has 8 divisors (see below), whose sum is σ = 1976431680. Its totient is φ = 983013192.

The previous prime is 1478421767. The next prime is 1478421781. The reversal of 1478421771 is 1771248741.

1478421771 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1478421771 - 2² = 1478421767 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1478421701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649005 + ... + 651278.

It is an arithmetic number, because the mean of its divisors is an integer number (247053960).

Almost surely, 2^1478421771 is an apocalyptic number.

1478421771 is a deficient number, since it is larger than the sum of its proper divisors (498009909).

1478421771 is a wasteful number, since it uses less digits than its factorization.

1478421771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300665.

The product of its digits is 87808, while the sum is 42.

The square root of 1478421771 is about 38450.2505973628. The cubic root of 1478421771 is about 1139.1986188444.

The spelling of 1478421771 in words is "one billion, four hundred seventy-eight million, four hundred twenty-one thousand, seven hundred seventy-one".