242124919 has 4 divisors (see below), whose sum is σ = 242209440. Its totient is φ = 242040400.

The previous prime is 242124913. The next prime is 242124941. The reversal of 242124919 is 919421242.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919421242 = 2 ⋅459710621.

It is a cyclic number.

It is not a de Polignac number, because 242124919 - 2¹⁷ = 241993847 is a prime.

It is a super-3 number, since 3×242124919³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242124913) 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, 37807 + ... + 43744.

It is an arithmetic number, because the mean of its divisors is an integer number (60552360).

Almost surely, 2^242124919 is an apocalyptic number.

242124919 is a deficient number, since it is larger than the sum of its proper divisors (84521).

242124919 is an equidigital number, since it uses as much as digits as its factorization.

242124919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84520.

The product of its digits is 10368, while the sum is 34.

The square root of 242124919 is about 15560.3637168287. The cubic root of 242124919 is about 623.2751752260.

The spelling of 242124919 in words is "two hundred forty-two million, one hundred twenty-four thousand, nine hundred nineteen".