8042531 has 4 divisors (see below), whose sum is σ = 9191472. Its totient is φ = 6893592.

The previous prime is 8042521. The next prime is 8042533. The reversal of 8042531 is 1352408.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8042531 - 2¹⁸ = 7780387 is a prime.

It is a super-2 number, since 2×8042531² = 129364609771922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8042497 and 8042506.

It is not an unprimeable number, because it can be changed into a prime (8042533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574460 + ... + 574473.

It is an arithmetic number, because the mean of its divisors is an integer number (2297868).

Almost surely, 2^8042531 is an apocalyptic number.

8042531 is a deficient number, since it is larger than the sum of its proper divisors (1148941).

8042531 is a wasteful number, since it uses less digits than its factorization.

8042531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148940.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 8042531 is about 2835.9356480710. The cubic root of 8042531 is about 200.3537987631.

Adding to 8042531 its reverse (1352408), we get a palindrome (9394939).

The spelling of 8042531 in words is "eight million, forty-two thousand, five hundred thirty-one".