42235001 has 2 divisors, whose sum is σ = 42235002. Its totient is φ = 42235000.

The previous prime is 42234979. The next prime is 42235003. The reversal of 42235001 is 10053224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42055225 + 179776 = 6485^2 + 424^2 .

It is a cyclic number.

It is not a de Polignac number, because 42235001 - 2⁶ = 42234937 is a prime.

It is a Sophie Germain prime.

Together with 42235003, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42235003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21117500 + 21117501.

It is an arithmetic number, because the mean of its divisors is an integer number (21117501).

Almost surely, 2^42235001 is an apocalyptic number.

It is an amenable number.

42235001 is a deficient number, since it is larger than the sum of its proper divisors (1).

42235001 is an equidigital number, since it uses as much as digits as its factorization.

42235001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 42235001 is about 6498.8461283523. The cubic root of 42235001 is about 348.2497683954.

Adding to 42235001 its reverse (10053224), we get a palindrome (52288225).

The spelling of 42235001 in words is "forty-two million, two hundred thirty-five thousand, one".