1244140101 has 8 divisors (see below), whose sum is σ = 1843170560. Its totient is φ = 829426716.

The previous prime is 1244140099. The next prime is 1244140109. The reversal of 1244140101 is 1010414421.

It is not a de Polignac number, because 1244140101 - 2¹ = 1244140099 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244140109) 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, 23039605 + ... + 23039658.

It is an arithmetic number, because the mean of its divisors is an integer number (230396320).

Almost surely, 2^1244140101 is an apocalyptic number.

It is an amenable number.

1244140101 is a deficient number, since it is larger than the sum of its proper divisors (599030459).

1244140101 is an equidigital number, since it uses as much as digits as its factorization.

1244140101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46079272 (or 46079266 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1244140101 is about 35272.3702208967. The cubic root of 1244140101 is about 1075.5314051235.

Adding to 1244140101 its reverse (1010414421), we get a palindrome (2254554522).

The spelling of 1244140101 in words is "one billion, two hundred forty-four million, one hundred forty thousand, one hundred one".