42001235 has 4 divisors (see below), whose sum is σ = 50401488. Its totient is φ = 33600984.

The previous prime is 42001217. The next prime is 42001241. The reversal of 42001235 is 53210024.

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 42001235 - 2⁶ = 42001171 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4200119 + ... + 4200128.

It is an arithmetic number, because the mean of its divisors is an integer number (12600372).

Almost surely, 2^42001235 is an apocalyptic number.

42001235 is a deficient number, since it is larger than the sum of its proper divisors (8400253).

42001235 is an equidigital number, since it uses as much as digits as its factorization.

42001235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8400252.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 42001235 is about 6480.8359800260. The cubic root of 42001235 is about 347.6060715131.

Adding to 42001235 its reverse (53210024), we get a palindrome (95211259).

The spelling of 42001235 in words is "forty-two million, one thousand, two hundred thirty-five".