42765983 has 4 divisors (see below), whose sum is σ = 46055688. Its totient is φ = 39476280.

The previous prime is 42765977. The next prime is 42765997. The reversal of 42765983 is 38956724.

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 42765983 - 2⁴ = 42765967 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 (42765913) 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, 1644833 + ... + 1644858.

It is an arithmetic number, because the mean of its divisors is an integer number (11513922).

Almost surely, 2^42765983 is an apocalyptic number.

42765983 is a deficient number, since it is larger than the sum of its proper divisors (3289705).

42765983 is a wasteful number, since it uses less digits than its factorization.

42765983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289704.

The product of its digits is 362880, while the sum is 44.

The square root of 42765983 is about 6539.5705516494. The cubic root of 42765983 is about 349.7031033229.

The spelling of 42765983 in words is "forty-two million, seven hundred sixty-five thousand, nine hundred eighty-three".