71942523 has 16 divisors (see below), whose sum is σ = 97724160. Its totient is φ = 47066976.

The previous prime is 71942509. The next prime is 71942543. The reversal of 71942523 is 32524917.

It is a de Polignac number, because none of the positive numbers 2^k-71942523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71942503) 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 15 ways as a sum of consecutive naturals, for example, 71661 + ... + 72657.

It is an arithmetic number, because the mean of its divisors is an integer number (6107760).

Almost surely, 2^71942523 is an apocalyptic number.

71942523 is a deficient number, since it is larger than the sum of its proper divisors (25781637).

71942523 is a wasteful number, since it uses less digits than its factorization.

71942523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426.

The product of its digits is 15120, while the sum is 33.

The square root of 71942523 is about 8481.8938333370. The cubic root of 71942523 is about 415.9060342346.

The spelling of 71942523 in words is "seventy-one million, nine hundred forty-two thousand, five hundred twenty-three".