42215413 has 2 divisors, whose sum is σ = 42215414. Its totient is φ = 42215412.

The previous prime is 42215357. The next prime is 42215423. The reversal of 42215413 is 31451224.

42215413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40030929 + 2184484 = 6327^2 + 1478^2 .

It is a cyclic number.

It is not a de Polignac number, because 42215413 - 2²¹ = 40118261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42215423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21107706 + 21107707.

It is an arithmetic number, because the mean of its divisors is an integer number (21107707).

Almost surely, 2^42215413 is an apocalyptic number.

It is an amenable number.

42215413 is a deficient number, since it is larger than the sum of its proper divisors (1).

42215413 is an equidigital number, since it uses as much as digits as its factorization.

42215413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 22.

The square root of 42215413 is about 6497.3389168182. The cubic root of 42215413 is about 348.1959222871.

Adding to 42215413 its reverse (31451224), we get a palindrome (73666637).

The spelling of 42215413 in words is "forty-two million, two hundred fifteen thousand, four hundred thirteen".