1021426 has 8 divisors (see below), whose sum is σ = 1751040. Its totient is φ = 437748.

The previous prime is 1021417. The next prime is 1021429. The reversal of 1021426 is 6241201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1021426² = 2086622146952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36466 + ... + 36493.

It is an arithmetic number, because the mean of its divisors is an integer number (218880).

2^1021426 is an apocalyptic number.

1021426 is a deficient number, since it is larger than the sum of its proper divisors (729614).

1021426 is an equidigital number, since it uses as much as digits as its factorization.

1021426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72968.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1021426 is about 1010.6562224614. The cubic root of 1021426 is about 100.7091590464.

Adding to 1021426 its reverse (6241201), we get a palindrome (7262627).

The spelling of 1021426 in words is "one million, twenty-one thousand, four hundred twenty-six".