1242220103 has 2 divisors, whose sum is σ = 1242220104. Its totient is φ = 1242220102.

The previous prime is 1242220097. The next prime is 1242220123. The reversal of 1242220103 is 3010222421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242220103 - 2¹⁰ = 1242219079 is a prime.

It is a super-2 number, since 2×1242220103² = 3086221568594661218, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242220123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621110051 + 621110052.

It is an arithmetic number, because the mean of its divisors is an integer number (621110052).

Almost surely, 2^1242220103 is an apocalyptic number.

1242220103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242220103 is an equidigital number, since it uses as much as digits as its factorization.

1242220103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1242220103 is about 35245.1429703442. The cubic root of 1242220103 is about 1074.9778551054.

Adding to 1242220103 its reverse (3010222421), we get a palindrome (4252442524).

The spelling of 1242220103 in words is "one billion, two hundred forty-two million, two hundred twenty thousand, one hundred three".