42543746 has 8 divisors (see below), whose sum is σ = 72932160. Its totient is φ = 18233028.

The previous prime is 42543731. The next prime is 42543757. The reversal of 42543746 is 64734524.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519406 + ... + 1519433.

It is an arithmetic number, because the mean of its divisors is an integer number (9116520).

Almost surely, 2^42543746 is an apocalyptic number.

42543746 is a deficient number, since it is larger than the sum of its proper divisors (30388414).

42543746 is a wasteful number, since it uses less digits than its factorization.

42543746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038848.

The product of its digits is 80640, while the sum is 35.

The square root of 42543746 is about 6522.5567073043. The cubic root of 42543746 is about 349.0962972119.

It can be divided in two parts, 4254 and 3746, that added together give a cube (8000 = 20³).

The spelling of 42543746 in words is "forty-two million, five hundred forty-three thousand, seven hundred forty-six".