1242051231053 has 4 divisors (see below), whose sum is σ = 1242148606140. Its totient is φ = 1241953855968.

The previous prime is 1242051231049. The next prime is 1242051231061. The reversal of 1242051231053 is 3501321502421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 456351589444 + 785699641609 = 675538^2 + 886397^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242051231053 - 2² = 1242051231049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242051231353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48668408 + ... + 48693921.

It is an arithmetic number, because the mean of its divisors is an integer number (310537151535).

Almost surely, 2^{1242051231053} is an apocalyptic number.

It is an amenable number.

1242051231053 is a deficient number, since it is larger than the sum of its proper divisors (97375087).

1242051231053 is an equidigital number, since it uses as much as digits as its factorization.

1242051231053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97375086.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 1242051231053 its reverse (3501321502421), we get a palindrome (4743372733474).

The spelling of 1242051231053 in words is "one trillion, two hundred forty-two billion, fifty-one million, two hundred thirty-one thousand, fifty-three".