71731542 has 16 divisors (see below), whose sum is σ = 143743680. Its totient is φ = 23863752.

The previous prime is 71731537. The next prime is 71731559. The reversal of 71731542 is 24513717.

It is a congruent number.

It is an unprimeable number.

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, 8292 + ... + 14567.

It is an arithmetic number, because the mean of its divisors is an integer number (8983980).

Almost surely, 2^71731542 is an apocalyptic number.

71731542 is an abundant number, since it is smaller than the sum of its proper divisors (72012138).

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

71731542 is a wasteful number, since it uses less digits than its factorization.

71731542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23387.

The product of its digits is 5880, while the sum is 30.

The square root of 71731542 is about 8469.4475616772. The cubic root of 71731542 is about 415.4990695950.

The spelling of 71731542 in words is "seventy-one million, seven hundred thirty-one thousand, five hundred forty-two".