1428061 has 4 divisors (see below), whose sum is σ = 1431324. Its totient is φ = 1424800.

The previous prime is 1428041. The next prime is 1428079. The reversal of 1428061 is 1608241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 416025 + 1012036 = 645^2 + 1006^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428061 - 2⁵ = 1428029 is a prime.

It is a Smith number, since the sum of its digits (22) 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 (1428041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850 + ... + 1891.

It is an arithmetic number, because the mean of its divisors is an integer number (357831).

2^1428061 is an apocalyptic number.

It is an amenable number.

1428061 is a deficient number, since it is larger than the sum of its proper divisors (3263).

1428061 is an equidigital number, since it uses as much as digits as its factorization.

1428061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3262.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1428061 is about 1195.0150626666. The cubic root of 1428061 is about 112.6113728342.

It can be divided in two parts, 14280 and 61, that added together give a palindrome (14341).

The spelling of 1428061 in words is "one million, four hundred twenty-eight thousand, sixty-one".