242869247 has 4 divisors (see below), whose sum is σ = 243237336. Its totient is φ = 242501160.

The previous prime is 242869217. The next prime is 242869261. The reversal of 242869247 is 742968242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742968242 = 2 ⋅371484121.

It is a cyclic number.

It is not a de Polignac number, because 242869247 - 2⁶ = 242869183 is a prime.

It is a super-2 number, since 2×242869247² = 117970942276694018, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 242869198 and 242869207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242869217) 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, 183053 + ... + 184374.

It is an arithmetic number, because the mean of its divisors is an integer number (60809334).

Almost surely, 2^242869247 is an apocalyptic number.

242869247 is a deficient number, since it is larger than the sum of its proper divisors (368089).

242869247 is an equidigital number, since it uses as much as digits as its factorization.

242869247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368088.

The product of its digits is 387072, while the sum is 44.

The square root of 242869247 is about 15584.2627993755. The cubic root of 242869247 is about 623.9132020611.

It can be divided in two parts, 24286 and 9247, that added together give a palindrome (33533).

The spelling of 242869247 in words is "two hundred forty-two million, eight hundred sixty-nine thousand, two hundred forty-seven".