42252887 has 2 divisors, whose sum is σ = 42252888. Its totient is φ = 42252886.

The previous prime is 42252883. The next prime is 42252901. The reversal of 42252887 is 78825224.

It is a happy number.

42252887 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 42252887 - 2² = 42252883 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42252887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42252883) 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, 21126443 + 21126444.

It is an arithmetic number, because the mean of its divisors is an integer number (21126444).

Almost surely, 2^42252887 is an apocalyptic number.

42252887 is a deficient number, since it is larger than the sum of its proper divisors (1).

42252887 is an equidigital number, since it uses as much as digits as its factorization.

42252887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 38.

The square root of 42252887 is about 6500.2220731295. Note that the first 3 decimals coincide. The cubic root of 42252887 is about 348.2989212792.

The spelling of 42252887 in words is "forty-two million, two hundred fifty-two thousand, eight hundred eighty-seven".