42396605 has 4 divisors (see below), whose sum is σ = 50875932. Its totient is φ = 33917280.

The previous prime is 42396593. The next prime is 42396611. The reversal of 42396605 is 50669324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23639044 + 18757561 = 4862^2 + 4331^2 .

It is not a de Polignac number, because 42396605 - 2¹⁰ = 42395581 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4239656 + ... + 4239665.

It is an arithmetic number, because the mean of its divisors is an integer number (12718983).

Almost surely, 2^42396605 is an apocalyptic number.

It is an amenable number.

42396605 is a deficient number, since it is larger than the sum of its proper divisors (8479327).

42396605 is an equidigital number, since it uses as much as digits as its factorization.

42396605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8479326.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 42396605 is about 6511.2675417310. The cubic root of 42396605 is about 348.6933730423.

The spelling of 42396605 in words is "forty-two million, three hundred ninety-six thousand, six hundred five".