1301642 has 4 divisors (see below), whose sum is σ = 1952466. Its totient is φ = 650820.

The previous prime is 1301621. The next prime is 1301669. The reversal of 1301642 is 2461031.

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., 942841 + 358801 = 971^2 + 599^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1301642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325409 + ... + 325412.

2^1301642 is an apocalyptic number.

1301642 is a deficient number, since it is larger than the sum of its proper divisors (650824).

1301642 is an equidigital number, since it uses as much as digits as its factorization.

1301642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650823.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1301642 is about 1140.8952625022. The cubic root of 1301642 is about 109.1852194122.

Adding to 1301642 its reverse (2461031), we get a palindrome (3762673).

The spelling of 1301642 in words is "one million, three hundred one thousand, six hundred forty-two".