42939763 has 4 divisors (see below), whose sum is σ = 43014760. Its totient is φ = 42864768.

The previous prime is 42939737. The next prime is 42939769. The reversal of 42939763 is 36793924.

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-42939763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42939769) 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, 36633 + ... + 37786.

It is an arithmetic number, because the mean of its divisors is an integer number (10753690).

Almost surely, 2^42939763 is an apocalyptic number.

42939763 is a deficient number, since it is larger than the sum of its proper divisors (74997).

42939763 is an equidigital number, since it uses as much as digits as its factorization.

42939763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74996.

The product of its digits is 244944, while the sum is 43.

The square root of 42939763 is about 6552.8438864359. The cubic root of 42939763 is about 350.1761371946.

The spelling of 42939763 in words is "forty-two million, nine hundred thirty-nine thousand, seven hundred sixty-three".