42834739 has 2 divisors, whose sum is σ = 42834740. Its totient is φ = 42834738.

The previous prime is 42834733. The next prime is 42834793. The reversal of 42834739 is 93743824.

Together with next prime (42834793) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42834739 - 2¹³ = 42826547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42834733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21417369 + 21417370.

It is an arithmetic number, because the mean of its divisors is an integer number (21417370).

Almost surely, 2^42834739 is an apocalyptic number.

42834739 is a deficient number, since it is larger than the sum of its proper divisors (1).

42834739 is an equidigital number, since it uses as much as digits as its factorization.

42834739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 42834739 is about 6544.8253605425. The cubic root of 42834739 is about 349.8904119491.

The spelling of 42834739 in words is "forty-two million, eight hundred thirty-four thousand, seven hundred thirty-nine".