1021442 has 8 divisors (see below), whose sum is σ = 1542396. Its totient is φ = 507312.

The previous prime is 1021441. The next prime is 1021457. The reversal of 1021442 is 2441201.

It can be written as a sum of positive squares in 2 ways, for example, as 958441 + 63001 = 979^2 + 251^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1021441) 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, 1313 + ... + 1940.

2^1021442 is an apocalyptic number.

1021442 is a deficient number, since it is larger than the sum of its proper divisors (520954).

1021442 is a wasteful number, since it uses less digits than its factorization.

1021442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1021442 is about 1010.6641380795. The cubic root of 1021442 is about 100.7096848924.

Adding to 1021442 its reverse (2441201), we get a palindrome (3462643).

The spelling of 1021442 in words is "one million, twenty-one thousand, four hundred forty-two".