42535420 has 12 divisors (see below), whose sum is σ = 89324424. Its totient is φ = 17014160.

The previous prime is 42535403. The next prime is 42535439. The reversal of 42535420 is 2453524.

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, 1063366 + ... + 1063405.

It is an arithmetic number, because the mean of its divisors is an integer number (7443702).

Almost surely, 2^42535420 is an apocalyptic number.

It is an amenable number.

42535420 is an abundant number, since it is smaller than the sum of its proper divisors (46789004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42535420 is a wasteful number, since it uses less digits than its factorization.

42535420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126780 (or 2126778 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 42535420 is about 6521.9184294194. The cubic root of 42535420 is about 349.0735224943.

Adding to 42535420 its reverse (2453524), we get a palindrome (44988944).

The spelling of 42535420 in words is "forty-two million, five hundred thirty-five thousand, four hundred twenty".