42311605 has 16 divisors (see below), whose sum is σ = 60551424. Its totient is φ = 27751680.

The previous prime is 42311593. The next prime is 42311611. The reversal of 42311605 is 50611324.

It is not a de Polignac number, because 42311605 - 2⁵ = 42311573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25476 + ... + 27085.

It is an arithmetic number, because the mean of its divisors is an integer number (3784464).

Almost surely, 2^42311605 is an apocalyptic number.

It is an amenable number.

42311605 is a deficient number, since it is larger than the sum of its proper divisors (18239819).

42311605 is a wasteful number, since it uses less digits than its factorization.

42311605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52596.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 42311605 is about 6504.7371199765. The cubic root of 42311605 is about 348.4601879695.

Adding to 42311605 its reverse (50611324), we get a palindrome (92922929).

The spelling of 42311605 in words is "forty-two million, three hundred eleven thousand, six hundred five".