124220242727 has 4 divisors (see below), whose sum is σ = 141965991696. Its totient is φ = 106474493760.

The previous prime is 124220242673. The next prime is 124220242787. The reversal of 124220242727 is 727242022421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 727242022421 = 305113 ⋅2383517.

It is a cyclic number.

It is not a de Polignac number, because 124220242727 - 2²⁸ = 123951807271 is a prime.

It is a super-3 number, since 3×124220242727³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124220242787) 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, 8872874474 + ... + 8872874487.

It is an arithmetic number, because the mean of its divisors is an integer number (35491497924).

Almost surely, 2^124220242727 is an apocalyptic number.

124220242727 is a deficient number, since it is larger than the sum of its proper divisors (17745748969).

124220242727 is an equidigital number, since it uses as much as digits as its factorization.

124220242727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17745748968.

The product of its (nonzero) digits is 50176, while the sum is 35.

The spelling of 124220242727 in words is "one hundred twenty-four billion, two hundred twenty million, two hundred forty-two thousand, seven hundred twenty-seven".