42723922 has 8 divisors (see below), whose sum is σ = 64239372. Its totient is φ = 21310800.

The previous prime is 42723917. The next prime is 42723929. The reversal of 42723922 is 22932724.

42723922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 31708161 + 11015761 = 5631^2 + 3319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42723922² = 3650667022124168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42723929) 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 3 ways as a sum of consecutive naturals, for example, 24529 + ... + 26212.

Almost surely, 2^42723922 is an apocalyptic number.

42723922 is a deficient number, since it is larger than the sum of its proper divisors (21515450).

42723922 is a wasteful number, since it uses less digits than its factorization.

42723922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51164.

The product of its digits is 12096, while the sum is 31.

The square root of 42723922 is about 6536.3538765890. The cubic root of 42723922 is about 349.5884195956.

The spelling of 42723922 in words is "forty-two million, seven hundred twenty-three thousand, nine hundred twenty-two".