8542131 has 32 divisors (see below), whose sum is σ = 13063680. Its totient is φ = 4925184.

The previous prime is 8542129. The next prime is 8542133. The reversal of 8542131 is 1312458.

8542131 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8542129) and next prime (8542133).

It is not a de Polignac number, because 8542131 - 2¹ = 8542129 is a prime.

It is a super-2 number, since 2×8542131² = 145936004042322, which contains 22 as substring.

8542131 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8542133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79780 + ... + 79886.

It is an arithmetic number, because the mean of its divisors is an integer number (408240).

Almost surely, 2^8542131 is an apocalyptic number.

8542131 is a deficient number, since it is larger than the sum of its proper divisors (4521549).

8542131 is a wasteful number, since it uses less digits than its factorization.

8542131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235.

The product of its digits is 960, while the sum is 24.

The square root of 8542131 is about 2922.6924230921. The cubic root of 8542131 is about 204.4193842572.

Adding to 8542131 its reverse (1312458), we get a palindrome (9854589).

The spelling of 8542131 in words is "eight million, five hundred forty-two thousand, one hundred thirty-one".