42242471 has 2 divisors, whose sum is σ = 42242472. Its totient is φ = 42242470.

The previous prime is 42242437. The next prime is 42242477. The reversal of 42242471 is 17424224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42242471 - 2¹⁴ = 42226087 is a prime.

It is a super-3 number, since 3×42242471³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42242471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42242477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21121235 + 21121236.

It is an arithmetic number, because the mean of its divisors is an integer number (21121236).

Almost surely, 2^42242471 is an apocalyptic number.

42242471 is a deficient number, since it is larger than the sum of its proper divisors (1).

42242471 is an equidigital number, since it uses as much as digits as its factorization.

42242471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 26.

The square root of 42242471 is about 6499.4208203501. The cubic root of 42242471 is about 348.2702985430.

Adding to 42242471 its reverse (17424224), we get a palindrome (59666695).

The spelling of 42242471 in words is "forty-two million, two hundred forty-two thousand, four hundred seventy-one".