42723777 has 16 divisors (see below), whose sum is σ = 58423680. Its totient is φ = 27760512.

The previous prime is 42723773. The next prime is 42723803. The reversal of 42723777 is 77732724.

42723777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42723777 - 2² = 42723773 is a prime.

It is a super-2 number, since 2×42723777² = 3650642242291458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42723773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25749 + ... + 27357.

It is an arithmetic number, because the mean of its divisors is an integer number (3651480).

Almost surely, 2^42723777 is an apocalyptic number.

It is an amenable number.

42723777 is a deficient number, since it is larger than the sum of its proper divisors (15699903).

42723777 is a wasteful number, since it uses less digits than its factorization.

42723777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832.

The product of its digits is 115248, while the sum is 39.

The square root of 42723777 is about 6536.3427847689. The cubic root of 42723777 is about 349.5880241077.

The spelling of 42723777 in words is "forty-two million, seven hundred twenty-three thousand, seven hundred seventy-seven".