42938785 has 4 divisors (see below), whose sum is σ = 51526548. Its totient is φ = 34351024.

The previous prime is 42938761. The next prime is 42938807. The reversal of 42938785 is 58783924.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28376929 + 14561856 = 5327^2 + 3816^2 .

It is a cyclic number.

It is not a de Polignac number, because 42938785 - 2⁷ = 42938657 is a prime.

It is a Duffinian 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, 4293874 + ... + 4293883.

It is an arithmetic number, because the mean of its divisors is an integer number (12881637).

Almost surely, 2^42938785 is an apocalyptic number.

It is an amenable number.

42938785 is a deficient number, since it is larger than the sum of its proper divisors (8587763).

42938785 is an equidigital number, since it uses as much as digits as its factorization.

42938785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8587762.

The product of its digits is 483840, while the sum is 46.

The square root of 42938785 is about 6552.7692619228. The cubic root of 42938785 is about 350.1734786264.

The spelling of 42938785 in words is "forty-two million, nine hundred thirty-eight thousand, seven hundred eighty-five".