42256633 has 2 divisors, whose sum is σ = 42256634. Its totient is φ = 42256632.

The previous prime is 42256631. The next prime is 42256657. The reversal of 42256633 is 33665224.

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., 34433424 + 7823209 = 5868^2 + 2797^2 .

It is a cyclic number.

It is not a de Polignac number, because 42256633 - 2¹ = 42256631 is a prime.

Together with 42256631, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 42256595 and 42256604.

It is not a weakly prime, because it can be changed into another prime (42256631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21128316 + 21128317.

It is an arithmetic number, because the mean of its divisors is an integer number (21128317).

Almost surely, 2^42256633 is an apocalyptic number.

It is an amenable number.

42256633 is a deficient number, since it is larger than the sum of its proper divisors (1).

42256633 is an equidigital number, since it uses as much as digits as its factorization.

42256633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 31.

The square root of 42256633 is about 6500.5102107450. The cubic root of 42256633 is about 348.3092139818.

The spelling of 42256633 in words is "forty-two million, two hundred fifty-six thousand, six hundred thirty-three".