71742307 has 8 divisors (see below), whose sum is σ = 88298336. Its totient is φ = 56763072.

The previous prime is 71742301. The next prime is 71742343. The reversal of 71742307 is 70324717.

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 71742307 - 2³ = 71742299 is a prime.

It is a super-2 number, since 2×71742307² = 10293917227364498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71742301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394098 + ... + 394279.

It is an arithmetic number, because the mean of its divisors is an integer number (11037292).

Almost surely, 2^71742307 is an apocalyptic number.

71742307 is a deficient number, since it is larger than the sum of its proper divisors (16556029).

71742307 is a wasteful number, since it uses less digits than its factorization.

71742307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788397.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 71742307 is about 8470.0830574440. The cubic root of 71742307 is about 415.5198536816.

The spelling of 71742307 in words is "seventy-one million, seven hundred forty-two thousand, three hundred seven".