42234487 has 2 divisors, whose sum is σ = 42234488. Its totient is φ = 42234486.

The previous prime is 42234461. The next prime is 42234499. The reversal of 42234487 is 78443224.

42234487 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42234487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42264487) 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, 21117243 + 21117244.

It is an arithmetic number, because the mean of its divisors is an integer number (21117244).

Almost surely, 2^42234487 is an apocalyptic number.

42234487 is a deficient number, since it is larger than the sum of its proper divisors (1).

42234487 is an equidigital number, since it uses as much as digits as its factorization.

42234487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 34.

The square root of 42234487 is about 6498.8065827504. The cubic root of 42234487 is about 348.2483556563.

The spelling of 42234487 in words is "forty-two million, two hundred thirty-four thousand, four hundred eighty-seven".