1426905 has 24 divisors (see below), whose sum is σ = 2543112. Its totient is φ = 739584.

The previous prime is 1426891. The next prime is 1426907. The reversal of 1426905 is 5096241.

It can be written as a sum of positive squares in 4 ways, for example, as 741321 + 685584 = 861^2 + 828^2 .

It is not a de Polignac number, because 1426905 - 2⁴ = 1426889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1426907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1237 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (105963).

2^1426905 is an apocalyptic number.

1426905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1426905 is a deficient number, since it is larger than the sum of its proper divisors (1116207).

1426905 is a wasteful number, since it uses less digits than its factorization.

1426905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1426905 is about 1194.5312888326. The cubic root of 1426905 is about 112.5809787337.

The spelling of 1426905 in words is "one million, four hundred twenty-six thousand, nine hundred five".