1552320320242 has 4 divisors (see below), whose sum is σ = 2328480480366. Its totient is φ = 776160160120.

The previous prime is 1552320320231. The next prime is 1552320320281. The reversal of 1552320320242 is 2420230232551.

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., 933138612081 + 619181708161 = 965991^2 + 786881^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388080080059 + ... + 388080080062.

Almost surely, 2^{1552320320242} is an apocalyptic number.

1552320320242 is a deficient number, since it is larger than the sum of its proper divisors (776160160124).

1552320320242 is an equidigital number, since it uses as much as digits as its factorization.

1552320320242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776160160123.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 1552320320242 its reverse (2420230232551), we get a palindrome (3972550552793).

The spelling of 1552320320242 in words is "one trillion, five hundred fifty-two billion, three hundred twenty million, three hundred twenty thousand, two hundred forty-two".