71395642 has 8 divisors (see below), whose sum is σ = 107480916. Its totient is φ = 35568672.

The previous prime is 71395619. The next prime is 71395663. The reversal of 71395642 is 24659317.

It can be written as a sum of positive squares in 2 ways, for example, as 71250481 + 145161 = 8441^2 + 381^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 63883 + ... + 64990.

Almost surely, 2^71395642 is an apocalyptic number.

71395642 is a deficient number, since it is larger than the sum of its proper divisors (36085274).

71395642 is a wasteful number, since it uses less digits than its factorization.

71395642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129152.

The product of its digits is 45360, while the sum is 37.

The square root of 71395642 is about 8449.5941914390. The cubic root of 71395642 is about 414.8494968843.

The spelling of 71395642 in words is "seventy-one million, three hundred ninety-five thousand, six hundred forty-two".