42041089 has 2 divisors, whose sum is σ = 42041090. Its totient is φ = 42041088.

The previous prime is 42041071. The next prime is 42041101. The reversal of 42041089 is 98014024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34105600 + 7935489 = 5840^2 + 2817^2 .

It is a cyclic number.

It is not a de Polignac number, because 42041089 - 2⁷ = 42040961 is a prime.

It is not a weakly prime, because it can be changed into another prime (42041059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21020544 + 21020545.

It is an arithmetic number, because the mean of its divisors is an integer number (21020545).

Almost surely, 2^42041089 is an apocalyptic number.

It is an amenable number.

42041089 is a deficient number, since it is larger than the sum of its proper divisors (1).

42041089 is an equidigital number, since it uses as much as digits as its factorization.

42041089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 42041089 is about 6483.9100086291. The cubic root of 42041089 is about 347.7159818759.

The spelling of 42041089 in words is "forty-two million, forty-one thousand, eighty-nine".