1242240140101 has 4 divisors (see below), whose sum is σ = 1243948861792. Its totient is φ = 1240531418412.

The previous prime is 1242240140093. The next prime is 1242240140131. The reversal of 1242240140101 is 1010410422421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1242240140101 - 2³ = 1242240140093 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 (1242240140131) 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, 854359755 + ... + 854361208.

It is an arithmetic number, because the mean of its divisors is an integer number (310987215448).

Almost surely, 2^{1242240140101} is an apocalyptic number.

It is an amenable number.

1242240140101 is a deficient number, since it is larger than the sum of its proper divisors (1708721691).

1242240140101 is an equidigital number, since it uses as much as digits as its factorization.

1242240140101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708721690.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 1242240140101 its reverse (1010410422421), we get a palindrome (2252650562522).

The spelling of 1242240140101 in words is "one trillion, two hundred forty-two billion, two hundred forty million, one hundred forty thousand, one hundred one".