1242120103 has 8 divisors (see below), whose sum is σ = 1419891872. Its totient is φ = 1064429856.

The previous prime is 1242120091. The next prime is 1242120107. The reversal of 1242120103 is 3010212421.

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

It is not a de Polignac number, because 1242120103 - 2⁹ = 1242119591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242120107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16801 + ... + 52597.

It is an arithmetic number, because the mean of its divisors is an integer number (177486484).

Almost surely, 2^1242120103 is an apocalyptic number.

1242120103 is a deficient number, since it is larger than the sum of its proper divisors (177771769).

1242120103 is an equidigital number, since it uses as much as digits as its factorization.

1242120103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40761.

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

The square root of 1242120103 is about 35243.7243066053. The cubic root of 1242120103 is about 1074.9490087225.

Adding to 1242120103 its reverse (3010212421), we get a palindrome (4252332524).

The spelling of 1242120103 in words is "one billion, two hundred forty-two million, one hundred twenty thousand, one hundred three".