42890611 has 2 divisors, whose sum is σ = 42890612. Its totient is φ = 42890610.

The previous prime is 42890593. The next prime is 42890641. The reversal of 42890611 is 11609824.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42890611 - 2¹⁹ = 42366323 is a prime.

It is not a weakly prime, because it can be changed into another prime (42890641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21445305 + 21445306.

It is an arithmetic number, because the mean of its divisors is an integer number (21445306).

Almost surely, 2^42890611 is an apocalyptic number.

42890611 is a deficient number, since it is larger than the sum of its proper divisors (1).

42890611 is an equidigital number, since it uses as much as digits as its factorization.

42890611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 42890611 is about 6549.0923798646. The cubic root of 42890611 is about 350.0424737570.

The spelling of 42890611 in words is "forty-two million, eight hundred ninety thousand, six hundred eleven".