1320020242 has 4 divisors (see below), whose sum is σ = 1980030366. Its totient is φ = 660010120.

The previous prime is 1320020213. The next prime is 1320020263. The reversal of 1320020242 is 2420200231.

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., 745890721 + 574129521 = 27311^2 + 23961^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330005059 + ... + 330005062.

Almost surely, 2^1320020242 is an apocalyptic number.

1320020242 is a deficient number, since it is larger than the sum of its proper divisors (660010124).

1320020242 is an equidigital number, since it uses as much as digits as its factorization.

1320020242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660010123.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1320020242 is about 36332.0828194586. The cubic root of 1320020242 is about 1096.9669177030.

Adding to 1320020242 its reverse (2420200231), we get a palindrome (3740220473).

The spelling of 1320020242 in words is "one billion, three hundred twenty million, twenty thousand, two hundred forty-two".