1242103120 has 40 divisors (see below), whose sum is σ = 2890573920. Its totient is φ = 496379520.

The previous prime is 1242103097. The next prime is 1242103123. The reversal of 1242103120 is 213012421.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1242103094 and 1242103103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242103123) 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 in 7 ways as a sum of consecutive naturals, for example, 87051 + ... + 100309.

It is an arithmetic number, because the mean of its divisors is an integer number (72264348).

Almost surely, 2^1242103120 is an apocalyptic number.

1242103120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242103120 is an abundant number, since it is smaller than the sum of its proper divisors (1648470800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242103120 is a wasteful number, since it uses less digits than its factorization.

1242103120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14443 (or 14437 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1242103120 is about 35243.4833692698. The cubic root of 1242103120 is about 1074.9441095875.

Adding to 1242103120 its reverse (213012421), we get a palindrome (1455115541).

The spelling of 1242103120 in words is "one billion, two hundred forty-two million, one hundred three thousand, one hundred twenty".