242245013 has 4 divisors (see below), whose sum is σ = 242288460. Its totient is φ = 242201568.

The previous prime is 242245009. The next prime is 242245027. The reversal of 242245013 is 310542242.

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: 310542242 = 2 ⋅155271121.

It can be written as a sum of positive squares in 2 ways, for example, as 215443684 + 26801329 = 14678^2 + 5177^2 .

It is a cyclic number.

It is not a de Polignac number, because 242245013 - 2² = 242245009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242245013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242245043) 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, 11870 + ... + 25007.

It is an arithmetic number, because the mean of its divisors is an integer number (60572115).

Almost surely, 2^242245013 is an apocalyptic number.

It is an amenable number.

242245013 is a deficient number, since it is larger than the sum of its proper divisors (43447).

242245013 is an equidigital number, since it uses as much as digits as its factorization.

242245013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43446.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 242245013 is about 15564.2222099275. Note that the first 4 decimals coincide. The cubic root of 242245013 is about 623.3782063901.

Adding to 242245013 its reverse (310542242), we get a palindrome (552787255).

The spelling of 242245013 in words is "two hundred forty-two million, two hundred forty-five thousand, thirteen".