1024642 has 4 divisors (see below), whose sum is σ = 1536966. Its totient is φ = 512320.

The previous prime is 1024633. The next prime is 1024663. The reversal of 1024642 is 2464201.

1024642 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1018081 + 6561 = 1009^2 + 81^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256159 + ... + 256162.

2^1024642 is an apocalyptic number.

1024642 is a deficient number, since it is larger than the sum of its proper divisors (512324).

1024642 is an equidigital number, since it uses as much as digits as its factorization.

1024642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512323.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1024642 is about 1012.2460175274. The cubic root of 1024642 is about 100.8147438961.

Adding to 1024642 its reverse (2464201), we get a palindrome (3488843).

The spelling of 1024642 in words is "one million, twenty-four thousand, six hundred forty-two".