42016489 has 2 divisors, whose sum is σ = 42016490. Its totient is φ = 42016488.

The previous prime is 42016483. The next prime is 42016517. The reversal of 42016489 is 98461024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22963264 + 19053225 = 4792^2 + 4365^2 .

It is a cyclic number.

It is not a de Polignac number, because 42016489 - 2⁹ = 42015977 is a prime.

It is not a weakly prime, because it can be changed into another prime (42016483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21008244 + 21008245.

It is an arithmetic number, because the mean of its divisors is an integer number (21008245).

Almost surely, 2^42016489 is an apocalyptic number.

It is an amenable number.

42016489 is a deficient number, since it is larger than the sum of its proper divisors (1).

42016489 is an equidigital number, since it uses as much as digits as its factorization.

42016489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 42016489 is about 6482.0127275407. The cubic root of 42016489 is about 347.6481475873.

The spelling of 42016489 in words is "forty-two million, sixteen thousand, four hundred eighty-nine".