1426521 has 16 divisors (see below), whose sum is σ = 2044224. Its totient is φ = 881664.

The previous prime is 1426519. The next prime is 1426541. The reversal of 1426521 is 1256241.

It is not a de Polignac number, because 1426521 - 2¹ = 1426519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1426511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4065 + ... + 4401.

It is an arithmetic number, because the mean of its divisors is an integer number (127764).

2^1426521 is an apocalyptic number.

It is an amenable number.

1426521 is a deficient number, since it is larger than the sum of its proper divisors (617703).

1426521 is a wasteful number, since it uses less digits than its factorization.

1426521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its digits is 480, while the sum is 21.

The square root of 1426521 is about 1194.3705455176. The cubic root of 1426521 is about 112.5708787914.

The spelling of 1426521 in words is "one million, four hundred twenty-six thousand, five hundred twenty-one".