71423438 has 8 divisors (see below), whose sum is σ = 107501688. Its totient is φ = 35589544.

The previous prime is 71423423. The next prime is 71423461. The reversal of 71423438 is 83432417.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 60356 + ... + 61527.

It is an arithmetic number, because the mean of its divisors is an integer number (13437711).

Almost surely, 2^71423438 is an apocalyptic number.

71423438 is a deficient number, since it is larger than the sum of its proper divisors (36078250).

71423438 is a wasteful number, since it uses less digits than its factorization.

71423438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122178.

The product of its digits is 16128, while the sum is 32.

The square root of 71423438 is about 8451.2388440985. The cubic root of 71423438 is about 414.9033267828.

The spelling of 71423438 in words is "seventy-one million, four hundred twenty-three thousand, four hundred thirty-eight".