1242253055 has 8 divisors (see below), whose sum is σ = 1527062544. Its totient is φ = 969563200.

The previous prime is 1242253039. The next prime is 1242253091. The reversal of 1242253055 is 5503522421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1242253055 - 2⁴ = 1242253039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3029681 + ... + 3030090.

It is an arithmetic number, because the mean of its divisors is an integer number (190882818).

Almost surely, 2^1242253055 is an apocalyptic number.

1242253055 is a deficient number, since it is larger than the sum of its proper divisors (284809489).

1242253055 is an equidigital number, since it uses as much as digits as its factorization.

1242253055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6059817.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 1242253055 is about 35245.6104359110. The cubic root of 1242253055 is about 1074.9873602264.

Adding to 1242253055 its reverse (5503522421), we get a palindrome (6745775476).

The spelling of 1242253055 in words is "one billion, two hundred forty-two million, two hundred fifty-three thousand, fifty-five".