71942445 has 16 divisors (see below), whose sum is σ = 127897920. Its totient is φ = 38369232.

The previous prime is 71942407. The next prime is 71942473. The reversal of 71942445 is 54424917.

It is a happy number.

It is not a de Polignac number, because 71942445 - 2¹¹ = 71940397 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 266319 + ... + 266588.

It is an arithmetic number, because the mean of its divisors is an integer number (7993620).

Almost surely, 2^71942445 is an apocalyptic number.

It is an amenable number.

71942445 is a deficient number, since it is larger than the sum of its proper divisors (55955475).

71942445 is a wasteful number, since it uses less digits than its factorization.

71942445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532921 (or 532915 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 71942445 is about 8481.8892353060. The cubic root of 71942445 is about 415.9058839263.

The spelling of 71942445 in words is "seventy-one million, nine hundred forty-two thousand, four hundred forty-five".