1242131103 has 12 divisors (see below), whose sum is σ = 1856058360. Its totient is φ = 799532496.

The previous prime is 1242131089. The next prime is 1242131147. The reversal of 1242131103 is 3011312421.

It is not a de Polignac number, because 1242131103 - 2¹⁷ = 1242000031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242131183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2379301 + ... + 2379822.

It is an arithmetic number, because the mean of its divisors is an integer number (154671530).

Almost surely, 2^1242131103 is an apocalyptic number.

1242131103 is a deficient number, since it is larger than the sum of its proper divisors (613927257).

1242131103 is a wasteful number, since it uses less digits than its factorization.

1242131103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4759158 (or 4759155 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1242131103 is about 35243.8803624119. The cubic root of 1242131103 is about 1074.9521819004.

Adding to 1242131103 its reverse (3011312421), we get a palindrome (4253443524).

It can be divided in two parts, 124213 and 1103, that added together give a square (125316 = 354²).

The spelling of 1242131103 in words is "one billion, two hundred forty-two million, one hundred thirty-one thousand, one hundred three".