1240123101 has 16 divisors (see below), whose sum is σ = 1950670848. Its totient is φ = 685782000.

The previous prime is 1240123091. The next prime is 1240123109. The reversal of 1240123101 is 1013210421.

It is not a de Polignac number, because 1240123101 - 2⁷ = 1240122973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240123109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 951825 + ... + 953126.

It is an arithmetic number, because the mean of its divisors is an integer number (121916928).

Almost surely, 2^1240123101 is an apocalyptic number.

It is an amenable number.

1240123101 is a deficient number, since it is larger than the sum of its proper divisors (710547747).

1240123101 is a wasteful number, since it uses less digits than its factorization.

1240123101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904992.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1240123101 is about 35215.3815966830. The cubic root of 1240123101 is about 1074.3726214168.

Adding to 1240123101 its reverse (1013210421), we get a palindrome (2253333522).

The spelling of 1240123101 in words is "one billion, two hundred forty million, one hundred twenty-three thousand, one hundred one".