42723478 has 8 divisors (see below), whose sum is σ = 73240272. Its totient is φ = 18310056.

The previous prime is 42723449. The next prime is 42723479. The reversal of 42723478 is 87432724.

42723478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42723479) 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, 1525825 + ... + 1525852.

It is an arithmetic number, because the mean of its divisors is an integer number (9155034).

Almost surely, 2^42723478 is an apocalyptic number.

42723478 is a deficient number, since it is larger than the sum of its proper divisors (30516794).

42723478 is a wasteful number, since it uses less digits than its factorization.

42723478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051686.

The product of its digits is 75264, while the sum is 37.

The square root of 42723478 is about 6536.3199126114. The cubic root of 42723478 is about 349.5872085816.

It can be divided in two parts, 4272 and 3478, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 42723478 in words is "forty-two million, seven hundred twenty-three thousand, four hundred seventy-eight".