42159001 has 2 divisors, whose sum is σ = 42159002. Its totient is φ = 42159000.

The previous prime is 42158999. The next prime is 42159059. The reversal of 42159001 is 10095124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25512601 + 16646400 = 5051^2 + 4080^2 .

It is a cyclic number.

It is not a de Polignac number, because 42159001 - 2¹ = 42158999 is a prime.

Together with 42158999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42159701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21079500 + 21079501.

It is an arithmetic number, because the mean of its divisors is an integer number (21079501).

Almost surely, 2^42159001 is an apocalyptic number.

It is an amenable number.

42159001 is a deficient number, since it is larger than the sum of its proper divisors (1).

42159001 is an equidigital number, since it uses as much as digits as its factorization.

42159001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 42159001 is about 6492.9963037106. The cubic root of 42159001 is about 348.0407563355.

The spelling of 42159001 in words is "forty-two million, one hundred fifty-nine thousand, one".