42005435 has 4 divisors (see below), whose sum is σ = 50406528. Its totient is φ = 33604344.

The previous prime is 42005423. The next prime is 42005459. The reversal of 42005435 is 53450024.

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

It is a cyclic number.

It is not a de Polignac number, because 42005435 - 2¹⁶ = 41939899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42005435.

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, 4200539 + ... + 4200548.

It is an arithmetic number, because the mean of its divisors is an integer number (12601632).

Almost surely, 2^42005435 is an apocalyptic number.

42005435 is a deficient number, since it is larger than the sum of its proper divisors (8401093).

42005435 is an equidigital number, since it uses as much as digits as its factorization.

42005435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8401092.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 42005435 is about 6481.1600041968. The cubic root of 42005435 is about 347.6176576553.

Adding to 42005435 its reverse (53450024), we get a palindrome (95455459).

The spelling of 42005435 in words is "forty-two million, five thousand, four hundred thirty-five".