1242402103 has 4 divisors (see below), whose sum is σ = 1242472608. Its totient is φ = 1242331600.

The previous prime is 1242402101. The next prime is 1242402127. The reversal of 1242402103 is 3012042421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1242402103 - 2¹ = 1242402101 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 (1242402101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16803 + ... + 52603.

It is an arithmetic number, because the mean of its divisors is an integer number (310618152).

Almost surely, 2^1242402103 is an apocalyptic number.

1242402103 is a deficient number, since it is larger than the sum of its proper divisors (70505).

1242402103 is an equidigital number, since it uses as much as digits as its factorization.

1242402103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70504.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1242402103 is about 35247.7247918217. The cubic root of 1242402103 is about 1075.0303515498.

Adding to 1242402103 its reverse (3012042421), we get a palindrome (4254444524).

The spelling of 1242402103 in words is "one billion, two hundred forty-two million, four hundred two thousand, one hundred three".