42225413 has 2 divisors, whose sum is σ = 42225414. Its totient is φ = 42225412.

The previous prime is 42225383. The next prime is 42225457. The reversal of 42225413 is 31452224.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40157569 + 2067844 = 6337^2 + 1438^2 .

It is a cyclic number.

It is not a de Polignac number, because 42225413 - 2⁶ = 42225349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42225013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21112706 + 21112707.

It is an arithmetic number, because the mean of its divisors is an integer number (21112707).

Almost surely, 2^42225413 is an apocalyptic number.

It is an amenable number.

42225413 is a deficient number, since it is larger than the sum of its proper divisors (1).

42225413 is an equidigital number, since it uses as much as digits as its factorization.

42225413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 23.

The square root of 42225413 is about 6498.1084170703. The cubic root of 42225413 is about 348.2234137022.

Adding to 42225413 its reverse (31452224), we get a palindrome (73677637).

The spelling of 42225413 in words is "forty-two million, two hundred twenty-five thousand, four hundred thirteen".