1426861 has 4 divisors (see below), whose sum is σ = 1510812. Its totient is φ = 1342912.

The previous prime is 1426847. The next prime is 1426877. The reversal of 1426861 is 1686241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1686241 = 193 ⋅8737.

It can be written as a sum of positive squares in 2 ways, for example, as 1144900 + 281961 = 1070^2 + 531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1426861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426801) 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, 41950 + ... + 41983.

It is an arithmetic number, because the mean of its divisors is an integer number (377703).

2^1426861 is an apocalyptic number.

It is an amenable number.

1426861 is a deficient number, since it is larger than the sum of its proper divisors (83951).

1426861 is an equidigital number, since it uses as much as digits as its factorization.

1426861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83950.

The product of its digits is 2304, while the sum is 28.

The square root of 1426861 is about 1194.5128714250. The cubic root of 1426861 is about 112.5798215405.

The spelling of 1426861 in words is "one million, four hundred twenty-six thousand, eight hundred sixty-one".