1428401 has 8 divisors (see below), whose sum is σ = 1619520. Its totient is φ = 1248912.

The previous prime is 1428389. The next prime is 1428409. The reversal of 1428401 is 1048241.

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 1428401 - 2¹⁴ = 1412017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1428409) 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, 2645 + ... + 3138.

It is an arithmetic number, because the mean of its divisors is an integer number (202440).

2^1428401 is an apocalyptic number.

It is an amenable number.

1428401 is a deficient number, since it is larger than the sum of its proper divisors (191119).

1428401 is a wasteful number, since it uses less digits than its factorization.

1428401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5815.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1428401 is about 1195.1573118213. The cubic root of 1428401 is about 112.6203091538.

The spelling of 1428401 in words is "one million, four hundred twenty-eight thousand, four hundred one".