42866867 has 4 divisors (see below), whose sum is σ = 43778976. Its totient is φ = 41954760.

The previous prime is 42866839. The next prime is 42866891. The reversal of 42866867 is 76866824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42866867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 912061 = 42866867 / (4 + 2 + 8 + 6 + 6 + 8 + 6 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42866807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455984 + ... + 456077.

It is an arithmetic number, because the mean of its divisors is an integer number (10944744).

Almost surely, 2^42866867 is an apocalyptic number.

42866867 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

42866867 is a deficient number, since it is larger than the sum of its proper divisors (912109).

42866867 is an equidigital number, since it uses as much as digits as its factorization.

42866867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912108.

The product of its digits is 774144, while the sum is 47.

The square root of 42866867 is about 6547.2793586344. The cubic root of 42866867 is about 349.9778679883.

The spelling of 42866867 in words is "forty-two million, eight hundred sixty-six thousand, eight hundred sixty-seven".