42877669 has 2 divisors, whose sum is σ = 42877670. Its totient is φ = 42877668.

The previous prime is 42877649. The next prime is 42877673. The reversal of 42877669 is 96677824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37761025 + 5116644 = 6145^2 + 2262^2 .

It is a cyclic number.

It is not a de Polignac number, because 42877669 - 2¹¹ = 42875621 is a prime.

It is a super-2 number, since 2×42877669² = 3676988997747122, which contains 22 as substring.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42877609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21438834 + 21438835.

It is an arithmetic number, because the mean of its divisors is an integer number (21438835).

Almost surely, 2^42877669 is an apocalyptic number.

It is an amenable number.

42877669 is a deficient number, since it is larger than the sum of its proper divisors (1).

42877669 is an equidigital number, since it uses as much as digits as its factorization.

42877669 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 42877669 is about 6548.1042294698. The cubic root of 42877669 is about 350.0072624343.

The spelling of 42877669 in words is "forty-two million, eight hundred seventy-seven thousand, six hundred sixty-nine".