71547042 has 16 divisors (see below), whose sum is σ = 163536192. Its totient is φ = 20442000.

The previous prime is 71547041. The next prime is 71547059. The reversal of 71547042 is 24074517.

It is not an unprimeable number, because it can be changed into a prime (71547041) 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 7 ways as a sum of consecutive naturals, for example, 851709 + ... + 851792.

It is an arithmetic number, because the mean of its divisors is an integer number (10221012).

Almost surely, 2^71547042 is an apocalyptic number.

71547042 is an abundant number, since it is smaller than the sum of its proper divisors (91989150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71547042 is a wasteful number, since it uses less digits than its factorization.

71547042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703513.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 71547042 is about 8458.5484570345. The cubic root of 71547042 is about 415.1425300337.

It can be divided in two parts, 7154 and 7042, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 71547042 in words is "seventy-one million, five hundred forty-seven thousand, forty-two".