42867943 has 2 divisors, whose sum is σ = 42867944. Its totient is φ = 42867942.

The previous prime is 42867899. The next prime is 42867953. The reversal of 42867943 is 34976824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42867943 - 2²⁵ = 9313511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42867943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42867953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21433971 + 21433972.

It is an arithmetic number, because the mean of its divisors is an integer number (21433972).

Almost surely, 2^42867943 is an apocalyptic number.

42867943 is a deficient number, since it is larger than the sum of its proper divisors (1).

42867943 is an equidigital number, since it uses as much as digits as its factorization.

42867943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 42867943 is about 6547.3615296545. The cubic root of 42867943 is about 349.9807962253.

The spelling of 42867943 in words is "forty-two million, eight hundred sixty-seven thousand, nine hundred forty-three".