71545042 has 8 divisors (see below), whose sum is σ = 111983616. Its totient is φ = 34217172.

The previous prime is 71545021. The next prime is 71545049. The reversal of 71545042 is 24054517.

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

It is a self number, because there is not a number n which added to its sum of digits gives 71545042.

It is not an unprimeable number, because it can be changed into a prime (71545049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777618 + ... + 777709.

It is an arithmetic number, because the mean of its divisors is an integer number (13997952).

Almost surely, 2^71545042 is an apocalyptic number.

71545042 is a deficient number, since it is larger than the sum of its proper divisors (40438574).

71545042 is a wasteful number, since it uses less digits than its factorization.

71545042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555352.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 71545042 is about 8458.4302326141. The cubic root of 71545042 is about 415.1386617499.

Adding to 71545042 its reverse (24054517), we get a palindrome (95599559).

It can be divided in two parts, 7 and 1545042, that added together give a square (1545049 = 1243²).

The spelling of 71545042 in words is "seventy-one million, five hundred forty-five thousand, forty-two".