42866951 has 2 divisors, whose sum is σ = 42866952. Its totient is φ = 42866950.

The previous prime is 42866933. The next prime is 42866953. The reversal of 42866951 is 15966824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42866951 is a prime.

Together with 42866953, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42866899 and 42866908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42866953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21433475 + 21433476.

It is an arithmetic number, because the mean of its divisors is an integer number (21433476).

Almost surely, 2^42866951 is an apocalyptic number.

42866951 is a deficient number, since it is larger than the sum of its proper divisors (1).

42866951 is an equidigital number, since it uses as much as digits as its factorization.

42866951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 41.

The square root of 42866951 is about 6547.2857735095. The cubic root of 42866951 is about 349.9780965885.

The spelling of 42866951 in words is "forty-two million, eight hundred sixty-six thousand, nine hundred fifty-one".