8218542 has 32 divisors (see below), whose sum is σ = 17172000. Its totient is φ = 2619008.

The previous prime is 8218541. The next prime is 8218543. The reversal of 8218542 is 2458128.

It is an interprime number because it is at equal distance from previous prime (8218541) and next prime (8218543).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8218541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25768 + ... + 26084.

It is an arithmetic number, because the mean of its divisors is an integer number (536625).

Almost surely, 2^8218542 is an apocalyptic number.

8218542 is an abundant number, since it is smaller than the sum of its proper divisors (8953458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8218542 is a wasteful number, since it uses less digits than its factorization.

8218542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500.

The product of its digits is 5120, while the sum is 30.

The square root of 8218542 is about 2866.7999581415. The cubic root of 8218542 is about 201.8048469766.

The spelling of 8218542 in words is "eight million, two hundred eighteen thousand, five hundred forty-two".