1428421171 has 8 divisors (see below), whose sum is σ = 1467474624. Its totient is φ = 1389633000.

The previous prime is 1428421157. The next prime is 1428421177. The reversal of 1428421171 is 1711248241.

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

It is a cyclic number.

It is not a de Polignac number, because 1428421171 - 2⁵ = 1428421139 is a prime.

It is a super-2 number, since 2×1428421171² = 4080774083522022482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428421177) 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 7 ways as a sum of consecutive naturals, for example, 55381 + ... + 76966.

It is an arithmetic number, because the mean of its divisors is an integer number (183434328).

Almost surely, 2^1428421171 is an apocalyptic number.

1428421171 is a deficient number, since it is larger than the sum of its proper divisors (39053453).

1428421171 is a wasteful number, since it uses less digits than its factorization.

1428421171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132641.

The product of its digits is 3584, while the sum is 31.

The square root of 1428421171 is about 37794.4595278197. The cubic root of 1428421171 is about 1126.2083926958.

The spelling of 1428421171 in words is "one billion, four hundred twenty-eight million, four hundred twenty-one thousand, one hundred seventy-one".