42939607 has 2 divisors, whose sum is σ = 42939608. Its totient is φ = 42939606.

The previous prime is 42939599. The next prime is 42939613. The reversal of 42939607 is 70693924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42939607 - 2³ = 42939599 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42939607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42939667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21469803 + 21469804.

It is an arithmetic number, because the mean of its divisors is an integer number (21469804).

Almost surely, 2^42939607 is an apocalyptic number.

42939607 is a deficient number, since it is larger than the sum of its proper divisors (1).

42939607 is an equidigital number, since it uses as much as digits as its factorization.

42939607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 42939607 is about 6552.8319831963. The cubic root of 42939607 is about 350.1757131312.

The spelling of 42939607 in words is "forty-two million, nine hundred thirty-nine thousand, six hundred seven".