101240123 has 16 divisors (see below), whose sum is σ = 105878016. Its totient is φ = 96744960.

The previous prime is 101240099. The next prime is 101240143. The reversal of 101240123 is 321042101.

It is a cyclic number.

It is not a de Polignac number, because 101240123 - 2⁶ = 101240059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101240098 and 101240107.

It is not an unprimeable number, because it can be changed into a prime (101240143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529958 + ... + 530148.

It is an arithmetic number, because the mean of its divisors is an integer number (6617376).

Almost surely, 2^101240123 is an apocalyptic number.

101240123 is a deficient number, since it is larger than the sum of its proper divisors (4637893).

101240123 is a wasteful number, since it uses less digits than its factorization.

101240123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 101240123 is about 10061.8150947033. The cubic root of 101240123 is about 466.0697197778.

Adding to 101240123 its reverse (321042101), we get a palindrome (422282224).

The spelling of 101240123 in words is "one hundred one million, two hundred forty thousand, one hundred twenty-three".