42740167 has 2 divisors, whose sum is σ = 42740168. Its totient is φ = 42740166.

The previous prime is 42740153. The next prime is 42740189. The reversal of 42740167 is 76104724.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42740167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42740107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21370083 + 21370084.

It is an arithmetic number, because the mean of its divisors is an integer number (21370084).

Almost surely, 2^42740167 is an apocalyptic number.

42740167 is a deficient number, since it is larger than the sum of its proper divisors (1).

42740167 is an equidigital number, since it uses as much as digits as its factorization.

42740167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 42740167 is about 6537.5964237631. The cubic root of 42740167 is about 349.6327222093.

The spelling of 42740167 in words is "forty-two million, seven hundred forty thousand, one hundred sixty-seven".