42235451 has 2 divisors, whose sum is σ = 42235452. Its totient is φ = 42235450.

The previous prime is 42235439. The next prime is 42235471. The reversal of 42235451 is 15453224.

It is a happy number.

42235451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42235451 - 2²² = 38041147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42235451.

It is not a weakly prime, because it can be changed into another prime (42235411) 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, 21117725 + 21117726.

It is an arithmetic number, because the mean of its divisors is an integer number (21117726).

Almost surely, 2^42235451 is an apocalyptic number.

42235451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42235451 is an equidigital number, since it uses as much as digits as its factorization.

42235451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 26.

The square root of 42235451 is about 6498.8807497907. The cubic root of 42235451 is about 348.2510052198.

Adding to 42235451 its reverse (15453224), we get a palindrome (57688675).

The spelling of 42235451 in words is "forty-two million, two hundred thirty-five thousand, four hundred fifty-one".