42075001 has 2 divisors, whose sum is σ = 42075002. Its totient is φ = 42075000.

The previous prime is 42074999. The next prime is 42075023. The reversal of 42075001 is 10057024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26677225 + 15397776 = 5165^2 + 3924^2 .

It is a cyclic number.

It is not a de Polignac number, because 42075001 - 2¹ = 42074999 is a prime.

Together with 42074999, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42075001.

It is not a weakly prime, because it can be changed into another prime (42075041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21037500 + 21037501.

It is an arithmetic number, because the mean of its divisors is an integer number (21037501).

Almost surely, 2^42075001 is an apocalyptic number.

It is an amenable number.

42075001 is a deficient number, since it is larger than the sum of its proper divisors (1).

42075001 is an equidigital number, since it uses as much as digits as its factorization.

42075001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 42075001 is about 6486.5245702148. The cubic root of 42075001 is about 347.8094505555.

The spelling of 42075001 in words is "forty-two million, seventy-five thousand, one".