42147543 has 8 divisors (see below), whose sum is σ = 56246400. Its totient is φ = 28073528.

The previous prime is 42147541. The next prime is 42147557. The reversal of 42147543 is 34574124.

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

It is a cyclic number.

It is not a de Polignac number, because 42147543 - 2¹ = 42147541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42147543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42147541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1803 + ... + 9356.

It is an arithmetic number, because the mean of its divisors is an integer number (7030800).

Almost surely, 2^42147543 is an apocalyptic number.

42147543 is a deficient number, since it is larger than the sum of its proper divisors (14098857).

42147543 is a wasteful number, since it uses less digits than its factorization.

42147543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12421.

The product of its digits is 13440, while the sum is 30.

The square root of 42147543 is about 6492.1139084277. The cubic root of 42147543 is about 348.0092232329.

The spelling of 42147543 in words is "forty-two million, one hundred forty-seven thousand, five hundred forty-three".