42578735 has 4 divisors (see below), whose sum is σ = 51094488. Its totient is φ = 34062984.

The previous prime is 42578719. The next prime is 42578737. The reversal of 42578735 is 53787524.

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 42578735 - 2⁴ = 42578719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42578692 and 42578701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42578737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4257869 + ... + 4257878.

It is an arithmetic number, because the mean of its divisors is an integer number (12773622).

Almost surely, 2^42578735 is an apocalyptic number.

42578735 is a deficient number, since it is larger than the sum of its proper divisors (8515753).

42578735 is an equidigital number, since it uses as much as digits as its factorization.

42578735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8515752.

The product of its digits is 235200, while the sum is 41.

The square root of 42578735 is about 6525.2383098244. The cubic root of 42578735 is about 349.1919727186.

The spelling of 42578735 in words is "forty-two million, five hundred seventy-eight thousand, seven hundred thirty-five".