42071523 has 8 divisors (see below), whose sum is σ = 60410448. Its totient is φ = 25890144.

The previous prime is 42071521. The next prime is 42071527. The reversal of 42071523 is 32517024.

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

It is not a de Polignac number, because 42071523 - 2¹ = 42071521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42071493 and 42071502.

It is not an unprimeable number, because it can be changed into a prime (42071521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539340 + ... + 539417.

It is an arithmetic number, because the mean of its divisors is an integer number (7551306).

Almost surely, 2^42071523 is an apocalyptic number.

42071523 is a deficient number, since it is larger than the sum of its proper divisors (18338925).

42071523 is a wasteful number, since it uses less digits than its factorization.

42071523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078773.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 42071523 is about 6486.2564704150. The cubic root of 42071523 is about 347.7998667601.

Adding to 42071523 its reverse (32517024), we get a palindrome (74588547).

The spelling of 42071523 in words is "forty-two million, seventy-one thousand, five hundred twenty-three".