42850001 has 2 divisors, whose sum is σ = 42850002. Its totient is φ = 42850000.

The previous prime is 42849977. The next prime is 42850007. The reversal of 42850001 is 10005824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35093776 + 7756225 = 5924^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 42850001 - 2²² = 38655697 is a prime.

It is a super-2 number, since 2×42850001² = 3672245171400002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42850007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21425000 + 21425001.

It is an arithmetic number, because the mean of its divisors is an integer number (21425001).

Almost surely, 2^42850001 is an apocalyptic number.

It is an amenable number.

42850001 is a deficient number, since it is larger than the sum of its proper divisors (1).

42850001 is an equidigital number, since it uses as much as digits as its factorization.

42850001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 42850001 is about 6545.9912160039. The cubic root of 42850001 is about 349.9319622850.

Adding to 42850001 its reverse (10005824), we get a palindrome (52855825).

The spelling of 42850001 in words is "forty-two million, eight hundred fifty thousand, one".