42424313 has 2 divisors, whose sum is σ = 42424314. Its totient is φ = 42424312.

The previous prime is 42424301. The next prime is 42424331. The reversal of 42424313 is 31342424.

Together with next prime (42424331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31047184 + 11377129 = 5572^2 + 3373^2 .

It is a cyclic number.

It is not a de Polignac number, because 42424313 - 2⁴ = 42424297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42424373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21212156 + 21212157.

It is an arithmetic number, because the mean of its divisors is an integer number (21212157).

Almost surely, 2^42424313 is an apocalyptic number.

It is an amenable number.

42424313 is a deficient number, since it is larger than the sum of its proper divisors (1).

42424313 is an equidigital number, since it uses as much as digits as its factorization.

42424313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 23.

The square root of 42424313 is about 6513.3948905314. The cubic root of 42424313 is about 348.7693185258.

Adding to 42424313 its reverse (31342424), we get a palindrome (73766737).

The spelling of 42424313 in words is "forty-two million, four hundred twenty-four thousand, three hundred thirteen".