71742331 has 8 divisors (see below), whose sum is σ = 72530640. Its totient is φ = 70958592.

The previous prime is 71742301. The next prime is 71742343. The reversal of 71742331 is 13324717.

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 71742331 - 2⁵ = 71742299 is a prime.

It is a super-2 number, since 2×71742331² = 10293924114627122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71742331.

It is not an unprimeable number, because it can be changed into a prime (71742301) 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, 37035 + ... + 38923.

It is an arithmetic number, because the mean of its divisors is an integer number (9066330).

Almost surely, 2^71742331 is an apocalyptic number.

71742331 is a deficient number, since it is larger than the sum of its proper divisors (788309).

71742331 is a wasteful number, since it uses less digits than its factorization.

71742331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285.

The product of its digits is 3528, while the sum is 28.

The square root of 71742331 is about 8470.0844741950. The cubic root of 71742331 is about 415.5199000163.

The spelling of 71742331 in words is "seventy-one million, seven hundred forty-two thousand, three hundred thirty-one".