42785263 has 4 divisors (see below), whose sum is σ = 43828848. Its totient is φ = 41741680.

The previous prime is 42785251. The next prime is 42785269. The reversal of 42785263 is 36258724.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42785263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42785269) 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, 521731 + ... + 521812.

It is an arithmetic number, because the mean of its divisors is an integer number (10957212).

Almost surely, 2^42785263 is an apocalyptic number.

42785263 is a deficient number, since it is larger than the sum of its proper divisors (1043585).

42785263 is a wasteful number, since it uses less digits than its factorization.

42785263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043584.

The product of its digits is 80640, while the sum is 37.

The square root of 42785263 is about 6541.0444884590. The cubic root of 42785263 is about 349.7556471316.

The spelling of 42785263 in words is "forty-two million, seven hundred eighty-five thousand, two hundred sixty-three".