42677689 has 2 divisors, whose sum is σ = 42677690. Its totient is φ = 42677688.

The previous prime is 42677681. The next prime is 42677759. The reversal of 42677689 is 98677624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27405225 + 15272464 = 5235^2 + 3908^2 .

It is a cyclic number.

It is not a de Polignac number, because 42677689 - 2³ = 42677681 is a prime.

It is not a weakly prime, because it can be changed into another prime (42677681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21338844 + 21338845.

It is an arithmetic number, because the mean of its divisors is an integer number (21338845).

Almost surely, 2^42677689 is an apocalyptic number.

It is an amenable number.

42677689 is a deficient number, since it is larger than the sum of its proper divisors (1).

42677689 is an equidigital number, since it uses as much as digits as its factorization.

42677689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The square root of 42677689 is about 6532.8163145767. The cubic root of 42677689 is about 349.4622736009.

The spelling of 42677689 in words is "forty-two million, six hundred seventy-seven thousand, six hundred eighty-nine".