242245431 has 8 divisors (see below), whose sum is σ = 358882160. Its totient is φ = 161496936.

The previous prime is 242245403. The next prime is 242245433. The reversal of 242245431 is 134542242.

242245431 is a `hidden beast` number, since 2 + 4 + 224 + 5 + 431 = 666.

It is not a de Polignac number, because 242245431 - 2¹⁹ = 241721143 is a prime.

It is a super-2 number, since 2×242245431² = 117365697680751522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8972053 = 242245431 / (2 + 4 + 2 + 2 + 4 + 5 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242245395 and 242245404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242245433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4486000 + ... + 4486053.

It is an arithmetic number, because the mean of its divisors is an integer number (44860270).

Almost surely, 2^242245431 is an apocalyptic number.

242245431 is a deficient number, since it is larger than the sum of its proper divisors (116636729).

242245431 is an equidigital number, since it uses as much as digits as its factorization.

242245431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8972062 (or 8972056 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 242245431 is about 15564.2356381545. The cubic root of 242245431 is about 623.3785649416.

Adding to 242245431 its reverse (134542242), we get a palindrome (376787673).

The spelling of 242245431 in words is "two hundred forty-two million, two hundred forty-five thousand, four hundred thirty-one".