1242144101 has 8 divisors (see below), whose sum is σ = 1355359008. Its totient is φ = 1128978000.

The previous prime is 1242144089. The next prime is 1242144103. The reversal of 1242144101 is 1014412421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242144101 - 2¹⁸ = 1241881957 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 (1242144103) 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, 59231 + ... + 77411.

It is an arithmetic number, because the mean of its divisors is an integer number (169419876).

Almost surely, 2^1242144101 is an apocalyptic number.

1242144101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1242144101 is a deficient number, since it is larger than the sum of its proper divisors (113214907).

1242144101 is a wasteful number, since it uses less digits than its factorization.

1242144101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24403.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1242144101 is about 35244.0647627370. The cubic root of 1242144101 is about 1074.9559314186.

Adding to 1242144101 its reverse (1014412421), we get a palindrome (2256556522).

The spelling of 1242144101 in words is "one billion, two hundred forty-two million, one hundred forty-four thousand, one hundred one".