42867609 has 4 divisors (see below), whose sum is σ = 57156816. Its totient is φ = 28578404.

The previous prime is 42867577. The next prime is 42867641. The reversal of 42867609 is 90676824.

42867609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (42867577) and next prime (42867641).

It is a cyclic number.

It is not a de Polignac number, because 42867609 - 2⁵ = 42867577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42867679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7144599 + ... + 7144604.

It is an arithmetic number, because the mean of its divisors is an integer number (14289204).

Almost surely, 2^42867609 is an apocalyptic number.

It is an amenable number.

42867609 is a deficient number, since it is larger than the sum of its proper divisors (14289207).

42867609 is a wasteful number, since it uses less digits than its factorization.

42867609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14289206.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 42867609 is about 6547.3360231471. The cubic root of 42867609 is about 349.9798872796.

The spelling of 42867609 in words is "forty-two million, eight hundred sixty-seven thousand, six hundred nine".